diff --git a/src/window.ui b/src/window.ui
index f08c8a7..188f374 100644
--- a/src/window.ui
+++ b/src/window.ui
@@ -9,32 +9,63 @@
     </style>
     <property name="default-width">1280</property>
     <property name="default-height">720</property>
-    <property name="content">
-      <object class="AdwToolbarView">
 
-        <child type="top">
-          <object class="AdwHeaderBar">
-            <child type="end">
-              <object class="GtkMenuButton">
-                <property name="primary">True</property>
-                <property name="icon-name">open-menu-symbolic</property>
-                <property name="tooltip-text" translatable="yes">Main Menu</property>
-                <property name="menu-model">primary_menu</property>
+      <property name="content">
+        <object class="AdwNavigationSplitView" id="split_view">
+          <property name="show-content">content</property>
+          <property name="sidebar">
+            <object class="AdwNavigationPage">
+              <property name="title" translatable="yes">Sidebar</property>
+              <property name="child">
+
+                <object class="AdwToolbarView">
+                  <child type="top">
+                    <object class="AdwHeaderBar">
+                      <property name="show-end-title-buttons">false</property>
+                      <property name="show-title">false</property>
+                      <child type="end">
+                        <object class="GtkMenuButton">
+                          <property name="primary">True</property>
+                          <property name="icon-name">open-menu-symbolic</property>
+                          <property name="tooltip-text" translatable="yes">Main Menu</property>
+                          <property name="menu-model">primary_menu</property>
+                        </object>
+                      </child>
+                    </object>
+                  </child>
+                </object>
+
+              </property>
+            </object>
+          </property>
+          <property name="content">
+            <object class="AdwNavigationPage">
+              <property name="title" translatable="yes">Worldbuilder</property>
+              <property name="child">
+
+              <object class="AdwToolbarView">
+                <child type="top">
+                  <object class="AdwHeaderBar">
+                    <property name="show-end-title-buttons">true</property>
+                    <property name="show-title">true</property>
+                  </object>
+                </child>
+
+                <child>
+                  <object class="GtkGLArea" id="draw_area">
+                    <property name="hexpand">true</property>
+                    <property name="vexpand">true</property>
+                  </object>
+                </child>
               </object>
-            </child>
-          </object>
-        </child>
+            </property>
 
-        <property name="content">
-          <object class="GtkGLArea" id="draw_area">
-            <property name="hexpand">true</property>
-            <property name="vexpand">true</property>
-          </object>
-        </property>
-
-      </object>
-    </property>
+            </object>
+          </property>
+        </object>
+      </property>
   </template>
+
   <menu id="primary_menu">
     <section>
       <item>