diff --git a/apps/openmw/mwworld/cells.cpp b/apps/openmw/mwworld/cells.cpp
index 7d04cfc687..143ce557b5 100644
--- a/apps/openmw/mwworld/cells.cpp
+++ b/apps/openmw/mwworld/cells.cpp
@@ -4,6 +4,8 @@
 
 #include <algorithm>
 
+#include "world.hpp"
+
 MWWorld::Ptr::CellStore *MWWorld::Cells::getCellStore (const ESM::Cell *cell)
 {
     if (cell->data.flags & ESM::Cell::Interior)
@@ -33,8 +35,8 @@ MWWorld::Ptr::CellStore *MWWorld::Cells::getCellStore (const ESM::Cell *cell)
     }
 }
 
-MWWorld::Cells::Cells (const ESMS::ESMStore& store, ESM::ESMReader& reader)
-: mStore (store), mReader (reader) {}
+MWWorld::Cells::Cells (const ESMS::ESMStore& store, ESM::ESMReader& reader, MWWorld::World& world)
+: mStore (store), mReader (reader), mWorld (world) {}
 
 MWWorld::Ptr::CellStore *MWWorld::Cells::getExterior (int x, int y)
 {
@@ -43,7 +45,21 @@ MWWorld::Ptr::CellStore *MWWorld::Cells::getExterior (int x, int y)
 
     if (result==mExteriors.end())
     {
-        const ESM::Cell *cell = mStore.cells.findExt (x, y);
+        const ESM::Cell *cell = mStore.cells.searchExt (x, y);
+
+        if (!cell)
+        {
+            // Cell isn't predefined. Make one on the fly.
+            ESM::Cell record;
+
+            record.data.flags = 0;
+            record.data.gridX = x;
+            record.data.gridY = y;
+            record.water = 0;
+            record.mapColor = 0;
+
+            cell = mWorld.createRecord (record);
+        }
 
         result = mExteriors.insert (std::make_pair (
             std::make_pair (x, y), Ptr::CellStore (cell))).first;
diff --git a/apps/openmw/mwworld/cells.hpp b/apps/openmw/mwworld/cells.hpp
index 661969881f..0ecbd02d37 100644
--- a/apps/openmw/mwworld/cells.hpp
+++ b/apps/openmw/mwworld/cells.hpp
@@ -18,6 +18,8 @@ namespace ESM
 
 namespace MWWorld
 {
+    class World;
+
     /// \brief Cell container
     class Cells
     {
@@ -25,6 +27,7 @@ namespace MWWorld
             ESM::ESMReader& mReader;
             std::map<std::string, Ptr::CellStore> mInteriors;
             std::map<std::pair<int, int>, Ptr::CellStore> mExteriors;
+            MWWorld::World& mWorld;
 
             Cells (const Cells&);
             Cells& operator= (const Cells&);
@@ -33,7 +36,9 @@ namespace MWWorld
 
         public:
 
-            Cells (const ESMS::ESMStore& store, ESM::ESMReader& reader);
+            Cells (const ESMS::ESMStore& store, ESM::ESMReader& reader, MWWorld::World& world);
+            ///< \todo pass the dynamic part of the ESMStore isntead (once it is written) of the whole
+            /// world
 
             Ptr::CellStore *getExterior (int x, int y);
 
diff --git a/apps/openmw/mwworld/world.cpp b/apps/openmw/mwworld/world.cpp
index ee1a0ad2d4..906d92c9f1 100644
--- a/apps/openmw/mwworld/world.cpp
+++ b/apps/openmw/mwworld/world.cpp
@@ -214,7 +214,7 @@ namespace MWWorld
         const std::string& master, const boost::filesystem::path& resDir,
         bool newGame, Environment& environment, const std::string& encoding)
     : mScene (renderer,physEng), mPlayer (0), mGlobalVariables (0),
-      mSky (false), mEnvironment (environment), mNextDynamicRecord (0), mCells (mStore, mEsm)
+      mSky (false), mEnvironment (environment), mNextDynamicRecord (0), mCells (mStore, mEsm, *this)
     {
         mPhysEngine = physEng;
 
@@ -722,4 +722,27 @@ namespace MWWorld
 
         return std::make_pair (stream.str(), created);
     }
+
+    const ESM::Cell *World::createRecord (const ESM::Cell& record)
+    {
+        if (record.data.flags & ESM::Cell::Interior)
+        {
+            if (mStore.cells.searchInt (record.name))
+                throw std::runtime_error ("failed creating interior cell");
+
+            ESM::Cell *cell = new ESM::Cell (record);
+            mStore.cells.intCells.insert (std::make_pair (record.name, cell));
+            return cell;
+        }
+        else
+        {
+            if (mStore.cells.searchExt (record.data.gridX, record.data.gridY))
+                throw std::runtime_error ("failed creating exterior cell");
+
+            ESM::Cell *cell = new ESM::Cell (record);
+            mStore.cells.extCells.insert (
+                std::make_pair (std::make_pair (record.data.gridX, record.data.gridY), cell));
+            return cell;
+        }
+    }
 }
diff --git a/apps/openmw/mwworld/world.hpp b/apps/openmw/mwworld/world.hpp
index 90d6121634..89c6057fa8 100644
--- a/apps/openmw/mwworld/world.hpp
+++ b/apps/openmw/mwworld/world.hpp
@@ -207,6 +207,10 @@ namespace MWWorld
             std::pair<std::string, const ESM::Class *> createRecord (const ESM::Class& record);
             ///< Create a new recrod (of type class) in the ESM store.
             /// \return ID, pointer to created record
+
+            const ESM::Cell *createRecord (const ESM::Cell& record);
+            ///< Create a new recrod (of type cell) in the ESM store.
+            /// \return ID, pointer to created record
     };
 }
 
diff --git a/components/esm_store/cell_store.hpp b/components/esm_store/cell_store.hpp
index 1336cc2ab3..19cb34c014 100644
--- a/components/esm_store/cell_store.hpp
+++ b/components/esm_store/cell_store.hpp
@@ -189,6 +189,9 @@ namespace ESMS
     {
         assert (cell);
 
+        if (cell->context.filename.empty())
+            return; // this is a dynamically generated cell -> skipping.
+
         // Reopen the ESM reader and seek to the right position.
         cell->restore (esm);
 
@@ -212,6 +215,9 @@ namespace ESMS
     {
       assert (cell);
 
+        if (cell->context.filename.empty())
+            return; // this is a dynamically generated cell -> skipping.
+
       // Reopen the ESM reader and seek to the right position.
       cell->restore(esm);
 
diff --git a/components/esm_store/reclists.hpp b/components/esm_store/reclists.hpp
index 7d3afbb96b..20a2e8ff95 100644
--- a/components/esm_store/reclists.hpp
+++ b/components/esm_store/reclists.hpp
@@ -305,15 +305,24 @@ namespace ESMS
           delete it->second;
     }
 
+    const ESM::Cell* searchInt(const std::string &id) const
+    {
+      IntCells::const_iterator iter = intCells.find(id);
+
+      if (iter!=intCells.end())
+        return iter->second;
+
+      return 0;
+    }
 
     const ESM::Cell* findInt(const std::string &id) const
     {
-      IntCells::const_iterator it = intCells.find(id);
+      const ESM::Cell *cell = searchInt (id);
 
-      if(it == intCells.end())
+      if (!cell)
          throw std::runtime_error ("Interior cell not found - " + id);
 
-      return it->second;
+      return cell;
     }
 
     const ESM::Cell *searchExt (int x, int y) const