diff --git a/Assets/Data/Scripts/DataClasses/TowerDataExtensions.cs b/Assets/Data/Scripts/DataClasses/TowerDataExtensions.cs
index 9508822..e174e81 100644
--- a/Assets/Data/Scripts/DataClasses/TowerDataExtensions.cs
+++ b/Assets/Data/Scripts/DataClasses/TowerDataExtensions.cs
@@ -38,7 +38,7 @@ namespace Northbound.Data
         public int length => sizeZ;     // Z축 (깊이)
         public float height => sizeY;   // Y축 (높이)
         public int maxHealth => maxHp;
-        public float visionRange => atkRange;
+        public float visionRange => sight;
         public float requiredWorkAmount => manpower;
 
         public Vector3 GetSize(int rotation)
diff --git a/Assets/Prefabs/Core.asset b/Assets/Prefabs/Core.asset
new file mode 100644
index 0000000..dc40c81
--- /dev/null
+++ b/Assets/Prefabs/Core.asset
@@ -0,0 +1,47 @@
+%YAML 1.1
+%TAG !u! tag:unity3d.com,2011:
+--- !u!114 &11400000
+MonoBehaviour:
+  m_ObjectHideFlags: 0
+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  m_GameObject: {fileID: 0}
+  m_Enabled: 1
+  m_EditorHideFlags: 0
+  m_Script: {fileID: 11500000, guid: 8c40fef5ebc37b743a3f225c1ca57c32, type: 3}
+  m_Name: Core
+  m_EditorClassIdentifier: Assembly-CSharp::Northbound.Data.TowerData
+  id: 0
+  memo: 
+  buildingName: 
+  level: 0
+  upgradeTo: 0
+  towerType: 
+  mana: 0
+  manpower: 0
+  sizeX: 0
+  sizeY: 0
+  sizeZ: 0
+  maxHp: 0
+  sight: 100
+  atkRange: 0
+  atkDamage: 0
+  atkIntervalSec: 0
+  modelPath: 
+  prefab: {fileID: 0}
+  icon: {fileID: 0}
+  placementOffset: {x: 0, y: 0, z: 0}
+  allowRotation: 1
+  isIndestructible: 0
+  autoRegenerate: 0
+  regenPerSecond: 1
+  providesVision: 1
+  constructionEquipment:
+    socketName: RightHand
+    equipmentPrefab: {fileID: 0}
+    attachOnStart: 1
+    detachOnEnd: 1
+    keepEquipped: 0
+    attachDelay: 0
+    detachDelay: 0
diff --git a/Assets/Prefabs/Core.asset.meta b/Assets/Prefabs/Core.asset.meta
new file mode 100644
index 0000000..cab2ec9
--- /dev/null
+++ b/Assets/Prefabs/Core.asset.meta
@@ -0,0 +1,8 @@
+fileFormatVersion: 2
+guid: 8e9cb7f0c2209b543b171709534789aa
+NativeFormatImporter:
+  externalObjects: {}
+  mainObjectFileID: 11400000
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 
diff --git a/Assets/Prefabs/Core.prefab b/Assets/Prefabs/Core.prefab
index cfa7314..35716e9 100644
--- a/Assets/Prefabs/Core.prefab
+++ b/Assets/Prefabs/Core.prefab
@@ -49,7 +49,7 @@ MonoBehaviour:
   m_Script: {fileID: 11500000, guid: d5a57f767e5e46a458fc5d3c628d0cbb, type: 3}
   m_Name: 
   m_EditorClassIdentifier: Unity.Netcode.Runtime::Unity.Netcode.NetworkObject
-  GlobalObjectIdHash: 3998537868
+  GlobalObjectIdHash: 615747208
   InScenePlacedSourceGlobalObjectIdHash: 615747208
   DeferredDespawnTick: 0
   Ownership: 0
@@ -106,7 +106,7 @@ MonoBehaviour:
   m_Name: 
   m_EditorClassIdentifier: Assembly-CSharp::Northbound.Building
   ShowTopMostFoldoutHeaderGroup: 1
-  buildingData: {fileID: 0}
+  buildingData: {fileID: 11400000, guid: 8e9cb7f0c2209b543b171709534789aa, type: 2}
   gridPosition: {x: 0, y: 0, z: 0}
   rotation: 0
   initialTeam: 1
@@ -152,10 +152,12 @@ MonoBehaviour:
   m_Script: {fileID: 11500000, guid: 760137a2fd0da7f458ac4b0ee7f485d6, type: 3}
   m_Name: 
   m_EditorClassIdentifier: Assembly-CSharp::Northbound.FogOfWarVisibility
+  alwaysVisible: 1
   showInExploredAreas: 1
   updateInterval: 0.2
   renderers: []
   enableDistantVisibility: 1
+  baseVisibilityRange: 50
   heightVisibilityMultiplier: 2
   minHeightForDistantVisibility: 3
   useExploredMaterial: 0
diff --git a/Assets/Scripts/Buildings/Blacksmith.cs b/Assets/Scripts/Buildings/Blacksmith.cs
index 333eaeb..1b08f04 100644
--- a/Assets/Scripts/Buildings/Blacksmith.cs
+++ b/Assets/Scripts/Buildings/Blacksmith.cs
@@ -6,8 +6,16 @@ namespace Northbound
     /// <summary>
     /// 블랙스미스 건물 - 업그레이드 구매 가능
     /// </summary>
-    public class Blacksmith : MonoBehaviour, IInteractable
+    public class Blacksmith : NetworkBehaviour, IInteractable, IVisionProvider, ITeamMember
     {
+        [Header("Vision Settings")]
+        [Tooltip("블랙스미스가 제공하는 시야 범위")]
+        public float visionRange = 10f;
+
+        [Header("Team")]
+        [Tooltip("건물의 팀")]
+        public TeamType initialTeam = TeamType.Player;
+
         [Header("UI Reference")]
         [SerializeField] private GameObject _upgradePopupPrefab;
 
@@ -55,9 +63,6 @@ namespace Northbound
             return transform;
         }
 
-
-
-
         #endregion
 
         private void OpenUpgradePopup(ulong playerId)
@@ -115,12 +120,63 @@ namespace Northbound
             return null;
         }
 
-        private void OnDestroy()
+        public override void OnDestroy()
         {
             if (_popupInstance != null)
             {
                 Destroy(_popupInstance);
             }
+            base.OnDestroy();
         }
+
+        #region NetworkBehaviour Overrides
+
+        public override void OnNetworkSpawn()
+        {
+            if (IsServer)
+            {
+                // 시야 제공자로 등록
+                FogOfWarSystem.Instance?.RegisterVisionProvider(this);
+            }
+        }
+
+        public override void OnNetworkDespawn()
+        {
+            if (IsServer)
+            {
+                // 시야 제공자 등록 해제
+                FogOfWarSystem.Instance?.UnregisterVisionProvider(this);
+            }
+        }
+
+        #endregion
+
+        #region IVisionProvider Implementation
+
+        public ulong GetOwnerId() => 0; // 블랙스미스는 모든 플레이어에게 시야 제공
+
+        public float GetVisionRange() => visionRange;
+
+        Transform IVisionProvider.GetTransform() => transform;
+
+        public bool IsActive() => IsSpawned;
+
+        TeamType IVisionProvider.GetTeam() => initialTeam;
+
+        #endregion
+
+        #region ITeamMember Implementation
+
+        public TeamType GetTeam() => initialTeam;
+
+        public bool IsDead() => false; // 블랙스미스는 파괴되지 않음
+
+        public void SetTeam(TeamType team)
+        {
+            // 블랙스미스의 팀은 변경할 수 없음
+            Debug.LogWarning("[Blacksmith] 블랙스미스의 팀은 변경할 수 없습니다.");
+        }
+
+        #endregion
     }
 }
diff --git a/Assets/Scripts/Core.cs b/Assets/Scripts/Core.cs
index b21d0c4..5e4fbe6 100644
--- a/Assets/Scripts/Core.cs
+++ b/Assets/Scripts/Core.cs
@@ -7,12 +7,15 @@ namespace Northbound
     /// <summary>
     /// 플레이어가 자원을 건내받아 게임의 전역 자원으로 관리하는 중앙 허브
     /// </summary>
-    public class Core : NetworkBehaviour, IInteractable, IDamageable, ITeamMember
+    public class Core : NetworkBehaviour, IInteractable, IDamageable, ITeamMember, IVisionProvider
     {
         [Header("Core Settings")]
         public int maxStorageCapacity = 1000; // 코어의 최대 저장 용량
         public bool unlimitedStorage = false; // 무제한 저장소
 
+        [Header("Vision")]
+        public float visionRange = 15f; // 코어가 제공하는 시야 범위
+
         [Header("Health")]
         public int maxHealth = 1000;
         public GameObject damageEffectPrefab;
@@ -55,6 +58,9 @@ namespace Northbound
             {
                 _totalResources.Value = 0;
                 _currentHealth.Value = maxHealth;
+
+                // 시야 제공자로 등록
+                FogOfWarSystem.Instance?.RegisterVisionProvider(this);
             }
 
             _currentHealth.OnValueChanged += OnHealthChanged;
@@ -62,6 +68,12 @@ namespace Northbound
 
         public override void OnNetworkDespawn()
         {
+            if (IsServer)
+            {
+                // 시야 제공자 등록 해제
+                FogOfWarSystem.Instance?.UnregisterVisionProvider(this);
+            }
+
             _currentHealth.OnValueChanged -= OnHealthChanged;
         }
 
@@ -372,5 +384,19 @@ namespace Northbound
         }
 
         #endregion
+
+        #region IVisionProvider Implementation
+
+        public ulong GetOwnerId() => 0; // 코어는 모든 플레이어에게 시야 제공
+
+        public float GetVisionRange() => visionRange;
+
+        Transform IVisionProvider.GetTransform() => transform;
+
+        public bool IsActive() => IsSpawned && !IsDead();
+
+        TeamType IVisionProvider.GetTeam() => TeamType.Player;
+
+        #endregion
     }
 }
\ No newline at end of file
diff --git a/Assets/Scripts/FogOfWarRenderer.cs b/Assets/Scripts/FogOfWarRenderer.cs
index f360997..9a62841 100644
--- a/Assets/Scripts/FogOfWarRenderer.cs
+++ b/Assets/Scripts/FogOfWarRenderer.cs
@@ -182,17 +182,39 @@ namespace Northbound
         {
             if (NetworkManager.Singleton == null) return ulong.MaxValue;
 
-            var localPlayer = NetworkManager.Singleton.SpawnManager.GetLocalPlayerObject();
-            if (localPlayer != null)
+            // 방법 1: SpawnManager에서 찾기
+            NetworkObject localPlayer = null;
+            if (NetworkManager.Singleton.SpawnManager != null)
             {
-                var playerController = localPlayer.GetComponent<NetworkPlayerController>();
-                if (playerController != null)
+                localPlayer = NetworkManager.Singleton.SpawnManager.GetLocalPlayerObject();
+            }
+
+            // 방법 2: LocalClient에서 찾기
+            if (localPlayer == null && NetworkManager.Singleton.LocalClient != null)
+            {
+                localPlayer = NetworkManager.Singleton.LocalClient.PlayerObject;
+            }
+
+            // 방법 3: 직접 검색 (IsLocalPlayer인 플레이어 찾기)
+            if (localPlayer == null)
+            {
+                var allPlayers = FindObjectsByType<NetworkPlayerController>(FindObjectsSortMode.None);
+                foreach (var player in allPlayers)
                 {
-                    return playerController.OwnerPlayerId;
+                    if (player.IsLocalPlayer)
+                    {
+                        localPlayer = player.GetComponent<NetworkObject>();
+                        break;
+                    }
                 }
             }
 
-            return ulong.MaxValue;
+            if (localPlayer == null) return ulong.MaxValue;
+
+            var playerController = localPlayer.GetComponent<NetworkPlayerController>();
+            if (playerController == null) return ulong.MaxValue;
+
+            return playerController.OwnerPlayerId;
         }
 
         /// <summary>
diff --git a/Assets/Scripts/FogOfWarSystem.cs b/Assets/Scripts/FogOfWarSystem.cs
index 9ecef51..92fc709 100644
--- a/Assets/Scripts/FogOfWarSystem.cs
+++ b/Assets/Scripts/FogOfWarSystem.cs
@@ -307,7 +307,8 @@ namespace Northbound
             if (!_visionProviders.Contains(provider))
             {
                 _visionProviders.Add(provider);
-                // Debug.Log($"<color=cyan>[FogOfWar] Vision Provider 등록: {provider.GetTransform().name} (Owner: {provider.GetOwnerId()})</color>");
+                // 즉시 시야 업데이트 트리거
+                _updateTimer = updateInterval;
             }
         }
 
diff --git a/Assets/Scripts/FogOfWarVisibility.cs b/Assets/Scripts/FogOfWarVisibility.cs
index ac2ac73..20a3e8c 100644
--- a/Assets/Scripts/FogOfWarVisibility.cs
+++ b/Assets/Scripts/FogOfWarVisibility.cs
@@ -10,6 +10,9 @@ namespace Northbound
     public class FogOfWarVisibility : MonoBehaviour
     {
         [Header("Visibility Settings")]
+        [Tooltip("Always show this object regardless of fog state (for core, important structures)")]
+        public bool alwaysVisible = false;
+
         [Tooltip("Show this object in explored areas (greyed out) or only when visible")]
         public bool showInExploredAreas = false;
 
@@ -19,10 +22,13 @@ namespace Northbound
         [Tooltip("Renderers to show/hide (auto-detected if empty)")]
         public Renderer[] renderers;
 
-        [Header("Height-Based Distant Visibility")]
+        [Header("Extended Visibility")]
         [Tooltip("Enable visibility from farther away based on object height")]
         public bool enableDistantVisibility = true;
 
+        [Tooltip("Base visibility range (additional range beyond player vision)")]
+        public float baseVisibilityRange = 10f;
+
         [Tooltip("Visibility range multiplier per unit of height (default: 2x vision per 1m height)")]
         public float heightVisibilityMultiplier = 2.0f;
 
@@ -76,8 +82,17 @@ namespace Northbound
             // CRITICAL: Start hidden and stay hidden until fog system confirms visibility
             // Force initial hide - don't use SetVisible because _isVisible defaults to false
             // which would cause early return
-            _isVisible = true; // Set to true first so SetVisible(false) actually runs
-            SetVisible(false);
+            // 단, alwaysVisible이면 항상 보임
+            if (alwaysVisible)
+            {
+                _isVisible = false;
+                SetVisible(true);
+            }
+            else
+            {
+                _isVisible = true; // Set to true first so SetVisible(false) actually runs
+                SetVisible(false);
+            }
         }
 
         /// <summary>
@@ -165,21 +180,50 @@ namespace Northbound
         {
             if (NetworkManager.Singleton == null) return ulong.MaxValue;
 
-            var localPlayer = NetworkManager.Singleton.SpawnManager.GetLocalPlayerObject();
-            if (localPlayer != null)
+            // 방법 1: SpawnManager에서 찾기
+            NetworkObject localPlayer = null;
+            if (NetworkManager.Singleton.SpawnManager != null)
             {
-                var playerController = localPlayer.GetComponent<NetworkPlayerController>();
-                if (playerController != null)
+                localPlayer = NetworkManager.Singleton.SpawnManager.GetLocalPlayerObject();
+            }
+
+            // 방법 2: LocalClient에서 찾기
+            if (localPlayer == null && NetworkManager.Singleton.LocalClient != null)
+            {
+                localPlayer = NetworkManager.Singleton.LocalClient.PlayerObject;
+            }
+
+            // 방법 3: 직접 검색 (IsLocalPlayer인 플레이어 찾기)
+            if (localPlayer == null)
+            {
+                var allPlayers = FindObjectsByType<NetworkPlayerController>(FindObjectsSortMode.None);
+                foreach (var player in allPlayers)
                 {
-                    return playerController.OwnerPlayerId;
+                    if (player.IsLocalPlayer)
+                    {
+                        localPlayer = player.GetComponent<NetworkObject>();
+                        break;
+                    }
                 }
             }
 
-            return ulong.MaxValue;
+            if (localPlayer == null) return ulong.MaxValue;
+
+            var playerController = localPlayer.GetComponent<NetworkPlayerController>();
+            if (playerController == null) return ulong.MaxValue;
+
+            return playerController.OwnerPlayerId;
         }
 
         private void UpdateVisibility()
         {
+            // 항상 보이는 객체는 fog 체크 안함
+            if (alwaysVisible)
+            {
+                SetVisible(true);
+                return;
+            }
+
             var fogSystem = FogOfWarSystem.Instance;
             if (fogSystem == null)
             {
@@ -268,11 +312,14 @@ namespace Northbound
             // Calculate extended visibility range based on height
             // Taller objects can be seen from farther away
             // Formula: Base range + (height - minHeight) * multiplier
-            float extendedRange = (_objectHeight - minHeightForDistantVisibility) * heightVisibilityMultiplier;
+            float extendedRange = 0f;
+            if (_objectHeight >= minHeightForDistantVisibility)
+            {
+                extendedRange = (_objectHeight - minHeightForDistantVisibility) * heightVisibilityMultiplier;
+            }
 
-            // Get player's vision range (assume average vision provider has ~15 unit range)
-            float baseVisionRange = 15f; // You can make this configurable
-            float totalRange = baseVisionRange + extendedRange;
+            // Total range = player vision + base visibility + height bonus
+            float totalRange = baseVisibilityRange + extendedRange;
 
             return distanceToPlayer <= totalRange;
         }
diff --git a/Assets/Scripts/WorkerSpawner.cs b/Assets/Scripts/WorkerSpawner.cs
index c33e1c9..732f4b2 100644
--- a/Assets/Scripts/WorkerSpawner.cs
+++ b/Assets/Scripts/WorkerSpawner.cs
@@ -3,8 +3,16 @@ using UnityEngine;
 
 namespace Northbound
 {
-    public class WorkerSpawner : NetworkBehaviour, IInteractable
+    public class WorkerSpawner : NetworkBehaviour, IInteractable, IVisionProvider, ITeamMember
     {
+        [Header("Vision Settings")]
+        [Tooltip("워커 홀이 제공하는 시야 범위")]
+        public float visionRange = 10f;
+
+        [Header("Team")]
+        [Tooltip("건물의 팀")]
+        public TeamType initialTeam = TeamType.Player;
+
         [Header("Spawner Settings")]
         public GameObject workerPrefab;
         public Transform spawnPoint;
@@ -34,11 +42,24 @@ namespace Northbound
         {
             base.OnNetworkSpawn();
             _workerCount.OnValueChanged += OnWorkerCountChanged;
+
+            if (IsServer)
+            {
+                // 시야 제공자로 등록
+                FogOfWarSystem.Instance?.RegisterVisionProvider(this);
+            }
         }
 
         public override void OnNetworkDespawn()
         {
             _workerCount.OnValueChanged -= OnWorkerCountChanged;
+
+            if (IsServer)
+            {
+                // 시야 제공자 등록 해제
+                FogOfWarSystem.Instance?.UnregisterVisionProvider(this);
+            }
+
             base.OnNetworkDespawn();
         }
 
@@ -240,9 +261,37 @@ namespace Northbound
             Vector3 spawnCenter = spawnPoint != null ? spawnPoint.position : transform.position;
             Gizmos.DrawWireSphere(spawnCenter, spawnRadius);
 
-            UnityEditor.Handles.Label(spawnCenter + Vector3.up * 2f, 
+            UnityEditor.Handles.Label(spawnCenter + Vector3.up * 2f,
                 $"Worker Spawner\nWorkers: {_workerCount.Value}/{maxWorkers}");
             #endif
         }
+
+        #region IVisionProvider Implementation
+
+        public ulong GetOwnerId() => 0; // 워커 홀은 모든 플레이어에게 시야 제공
+
+        public float GetVisionRange() => visionRange;
+
+        Transform IVisionProvider.GetTransform() => transform;
+
+        public bool IsActive() => IsSpawned;
+
+        TeamType IVisionProvider.GetTeam() => initialTeam;
+
+        #endregion
+
+        #region ITeamMember Implementation
+
+        public TeamType GetTeam() => initialTeam;
+
+        public bool IsDead() => false; // 워커 홀은 파괴되지 않음
+
+        public void SetTeam(TeamType team)
+        {
+            // 워커 홀의 팀은 변경할 수 없음
+            Debug.LogWarning("[WorkerSpawner] 워커 홀의 팀은 변경할 수 없습니다.");
+        }
+
+        #endregion
     }
 }