Index: Core/Components/src/Core.Components.Gis/Helpers/MapDataCollectionHelper.cs
===================================================================
diff -u -rad09bf3ef6fa7e53040d7e53fa68540f2f1e3336 -r19a92a9c3ec9073afdf1f13bf4d0acb83e996e26
--- Core/Components/src/Core.Components.Gis/Helpers/MapDataCollectionHelper.cs	(.../MapDataCollectionHelper.cs)	(revision ad09bf3ef6fa7e53040d7e53fa68540f2f1e3336)
+++ Core/Components/src/Core.Components.Gis/Helpers/MapDataCollectionHelper.cs	(.../MapDataCollectionHelper.cs)	(revision 19a92a9c3ec9073afdf1f13bf4d0acb83e996e26)
@@ -47,6 +47,22 @@
             return GetMapDataRecursively(mapDataCollection).ToDictionary(child => child, child => child.IsVisible);
         }
 
+        /// <summary>
+        /// Gets the visibility states of the child <see cref="MapDataCollection"/> of <paramref name="mapDataCollection"/>.
+        /// </summary>
+        /// <param name="mapDataCollection">The collection to get the child states from.</param>
+        /// <returns>A dictionary with the child map data collection and visibility states.</returns>
+        /// <exception cref="ArgumentNullException">Thrown when <paramref name="mapDataCollection"/> is <c>null</c>.</exception>
+        public static Dictionary<MapDataCollection, MapDataCollectionVisibility> GetNestedCollectionVisibilityStates(MapDataCollection mapDataCollection)
+        {
+            if (mapDataCollection == null)
+            {
+                throw new ArgumentNullException(nameof(mapDataCollection));
+            }
+
+            return GetMapDataCollectionRecursively(mapDataCollection).ToDictionary(child => child, child => child.GetVisibility());
+        }
+
         private static IEnumerable<MapData> GetMapDataRecursively(MapDataCollection mapDataCollection)
         {
             var mapDataList = new List<MapData>();
@@ -64,5 +80,22 @@
 
             return mapDataList;
         }
+
+        private static IEnumerable<MapDataCollection> GetMapDataCollectionRecursively(MapDataCollection mapDataCollection)
+        {
+            var mapDataCollectionList = new List<MapDataCollection>();
+
+            foreach (MapData mapData in mapDataCollection.Collection)
+            {
+                var nestedMapDataCollection = mapData as MapDataCollection;
+                if (nestedMapDataCollection != null)
+                {
+                    mapDataCollectionList.AddRange(GetMapDataCollectionRecursively(nestedMapDataCollection));
+                    mapDataCollectionList.Add(nestedMapDataCollection);
+                }
+            }
+
+            return mapDataCollectionList;
+        }
     }
-}
+}
\ No newline at end of file
Index: Core/Components/test/Core.Components.Gis.Test/Helpers/MapDataCollectionHelperTest.cs
===================================================================
diff -u -rc0b11bd2f03f6e836efa4cdc640ea974113712ec -r19a92a9c3ec9073afdf1f13bf4d0acb83e996e26
--- Core/Components/test/Core.Components.Gis.Test/Helpers/MapDataCollectionHelperTest.cs	(.../MapDataCollectionHelperTest.cs)	(revision c0b11bd2f03f6e836efa4cdc640ea974113712ec)
+++ Core/Components/test/Core.Components.Gis.Test/Helpers/MapDataCollectionHelperTest.cs	(.../MapDataCollectionHelperTest.cs)	(revision 19a92a9c3ec9073afdf1f13bf4d0acb83e996e26)
@@ -58,7 +58,7 @@
         [Test]
         public void GetChildVisibilityStates_MapDataCollectionWithChildren_ReturnsDictionary()
         {
-            // Setup            
+            // Setup
             var mapDataCollection = new MapDataCollection("test");
             var mapData1 = new TestFeatureBasedMapData();
             var mapData2 = new TestFeatureBasedMapData
@@ -97,5 +97,63 @@
             };
             CollectionAssert.AreEqual(expectedDictionary, states);
         }
+
+        [Test]
+        public void GetNestedCollectionVisibilityStates_MapDataCollectionNull_ThrowsArgumentNullException()
+        {
+            // Call
+            TestDelegate call = () => MapDataCollectionHelper.GetNestedCollectionVisibilityStates(null);
+
+            // Assert
+            var exception = Assert.Throws<ArgumentNullException>(call);
+            Assert.AreEqual("mapDataCollection", exception.ParamName);
+        }
+
+        [Test]
+        public void GetNestedCollectionVisibilityStates_MapDataCollectionWithoutChildren_ReturnsEmptyDictionary()
+        {
+            // Setup
+            var mapDataCollection = new MapDataCollection("test");
+
+            // Call
+            Dictionary<MapDataCollection, MapDataCollectionVisibility> states = MapDataCollectionHelper.GetNestedCollectionVisibilityStates(mapDataCollection);
+
+            // Assert
+            CollectionAssert.IsEmpty(states);
+        }
+
+        [Test]
+        public void GetNestedCollectionVisibilityStates_MapDataCollectionWithChildren_ReturnsDictionary()
+        {
+            // Setup
+            var mapDataCollection = new MapDataCollection("test");
+            var mapData1 = new TestFeatureBasedMapData();
+            var mapData2 = new TestFeatureBasedMapData
+            {
+                IsVisible = false
+            };
+            var mapData3 = new TestFeatureBasedMapData
+            {
+                IsVisible = false
+            };
+            var nestedCollection = new MapDataCollection("nested");
+            nestedCollection.Add(mapData3);
+
+            mapDataCollection.Add(mapData1);
+            mapDataCollection.Add(mapData2);
+            mapDataCollection.Add(nestedCollection);
+
+            // Call
+            Dictionary<MapDataCollection, MapDataCollectionVisibility> states = MapDataCollectionHelper.GetNestedCollectionVisibilityStates(mapDataCollection);
+
+            // Assert
+            var expectedDictionary = new Dictionary<MapDataCollection, MapDataCollectionVisibility>
+            {
+                {
+                    nestedCollection, MapDataCollectionVisibility.NotVisible
+                }
+            };
+            CollectionAssert.AreEqual(expectedDictionary, states);
+        }
     }
 }
\ No newline at end of file