diff --git a/enaml/qt/qt_window.py b/enaml/qt/qt_window.py
index 47f3abf6f..d50f8a501 100644
--- a/enaml/qt/qt_window.py
+++ b/enaml/qt/qt_window.py
@@ -7,10 +7,11 @@
 #------------------------------------------------------------------------------
 from atom.api import Typed
 
+from enaml.layout.geometry import Pos, Rect, Size
 from enaml.widgets.window import ProxyWindow
 
-from .QtCore import Qt, QSize, Signal
-from .QtGui import QFrame, QLayout, QIcon
+from .QtCore import Qt, QPoint, QRect, QSize, Signal
+from .QtGui import QApplication, QFrame, QLayout, QIcon
 
 from .q_resource_helpers import get_cached_qicon
 from .q_single_widget_layout import QSingleWidgetLayout
@@ -215,7 +216,9 @@ def init_widget(self):
         if d.title:
             self.set_title(d.title)
         if -1 not in d.initial_size:
-            self.set_initial_size(d.initial_size)
+            self.widget.resize(*d.initial_size)
+        if -1 not in d.initial_position:
+            self.widget.move(*d.initial_position)
         if d.modality != 'non_modal':
             self.set_modality(d.modality)
         if d.icon:
@@ -276,11 +279,77 @@ def child_removed(self, child):
     #--------------------------------------------------------------------------
     # ProxyWindow API
     #--------------------------------------------------------------------------
-    def close(self):
-        """ Close the window
+    def set_title(self, title):
+        """ Set the title of the window.
 
         """
-        self.widget.close()
+        self.widget.setWindowTitle(title)
+
+    def set_modality(self, modality):
+        """ Set the modality of the window.
+
+        """
+        self.widget.setWindowModality(MODALITY[modality])
+
+    def set_icon(self, icon):
+        """ Set the window icon.
+
+        """
+        if icon:
+            qicon = get_cached_qicon(icon)
+        else:
+            qicon = QIcon()
+        self.widget.setWindowIcon(qicon)
+
+    def position(self):
+        """ Get the position of the of the window.
+
+        """
+        point = self.widget.pos()
+        return Pos(point.x(), point.y())
+
+    def set_position(self, pos):
+        """ Set the position of the window.
+
+        """
+        self.widget.move(*pos)
+
+    def size(self):
+        """ Get the size of the window.
+
+        """
+        size = self.widget.size()
+        return Size(size.width(), size.height())
+
+    def set_size(self, size):
+        """ Set the size of the window.
+
+        """
+        size = QSize(*size)
+        if size.isValid():
+            self.widget.resize(size)
+
+    def geometry(self):
+        """ Get the geometry of the window.
+
+        """
+        rect = self.widget.geometry()
+        return Rect(rect.x(), rect.y(), rect.width(), rect.height())
+
+    def set_geometry(self, rect):
+        """ Set the geometry of the window.
+
+        """
+        rect = QRect(*rect)
+        if rect.isValid():
+            self.widget.setGeometry(rect)
+
+    def frame_geometry(self):
+        """ Get the geometry of the window.
+
+        """
+        rect = self.widget.frameGeometry()
+        return Rect(rect.x(), rect.y(), rect.width(), rect.height())
 
     def maximize(self):
         """ Maximize the window.
@@ -312,32 +381,32 @@ def send_to_back(self):
         """
         self.widget.lower()
 
-    def set_icon(self, icon):
-        """ Set the window icon.
-
-        """
-        if icon:
-            qicon = get_cached_qicon(icon)
-        else:
-            qicon = QIcon()
-        self.widget.setWindowIcon(qicon)
-
-    def set_title(self, title):
-        """ Set the title of the window.
+    def center_on_screen(self):
+        """ Center the window on the screen.
 
         """
-        self.widget.setWindowTitle(title)
+        widget = self.widget
+        rect = QRect(QPoint(0, 0), widget.frameGeometry().size())
+        geo = QApplication.desktop().screenGeometry(widget)
+        widget.move(geo.center() - rect.center())
 
-    def set_initial_size(self, size):
-        """ Set the initial size of the window.
+    def center_on_widget(self, other):
+        """ Center the window on another widget.
 
         """
-        if -1 in size:
-            return
-        self.widget.resize(QSize(*size))
+        widget = self.widget
+        rect = QRect(QPoint(0, 0), widget.frameGeometry().size())
+        other_widget = other.proxy.widget
+        if other_widget.isWindow():
+            geo = other_widget.frameGeometry()
+        else:
+            size = other_widget.size()
+            point = other_widget.mapToGlobal(QPoint(0, 0))
+            geo = QRect(point, size)
+        widget.move(geo.center() - rect.center())
 
-    def set_modality(self, modality):
-        """ Set the modality of the window.
+    def close(self):
+        """ Close the window.
 
         """
-        self.widget.setWindowModality(MODALITY[modality])
+        self.widget.close()
diff --git a/enaml/widgets/window.py b/enaml/widgets/window.py
index 4b71ca9c9..88611872a 100644
--- a/enaml/widgets/window.py
+++ b/enaml/widgets/window.py
@@ -13,7 +13,7 @@
 from enaml.application import deferred_call
 from enaml.core.declarative import d_
 from enaml.icon import Icon
-from enaml.layout.geometry import Size
+from enaml.layout.geometry import Pos, Rect, Size
 
 from .container import Container
 from .widget import Widget, ProxyWidget
@@ -35,7 +35,25 @@ def set_modality(self, modality):
     def set_icon(self, icon):
         raise NotImplementedError
 
-    def close(self):
+    def position(self):
+        raise NotImplementedError
+
+    def set_position(self, pos):
+        raise NotImplementedError
+
+    def size(self):
+        raise NotImplementedError
+
+    def set_size(self, size):
+        raise NotImplementedError
+
+    def geometry(self):
+        raise NotImplementedError
+
+    def set_geometry(self, rect):
+        raise NotImplementedError
+
+    def frame_geometry(self):
         raise NotImplementedError
 
     def minimize(self):
@@ -53,6 +71,15 @@ def send_to_front(self):
     def send_to_back(self):
         raise NotImplementedError
 
+    def center_on_screen(self):
+        raise NotImplementedError
+
+    def center_on_widget(self, other):
+        raise NotImplementedError
+
+    def close(self):
+        raise NotImplementedError
+
 
 class Window(Widget):
     """ A top-level Window component.
@@ -75,8 +102,12 @@ class Window(Widget):
     #: The titlebar text.
     title = d_(Unicode())
 
-    #: The initial size of the window. A value of (-1, -1) indicates
-    #: to let the toolkit choose the initial size.
+    #: The initial position of the window frame. A value of (-1, -1)
+    #: indicates that the toolkit should choose the initial position.
+    initial_position = d_(Coerced(Pos, (-1, -1)))
+
+    #: The initial size of the window client area. A value of (-1, -1)
+    #: indicates that the toolkit should choose the initial size.
     initial_size = d_(Coerced(Size, (-1, -1)))
 
     #: An enum which indicates the modality of the window. The default
@@ -134,12 +165,93 @@ def central_widget(self):
             if isinstance(child, Container):
                 return child
 
-    def close(self):
-        """ Send the 'close' action to the client widget.
+    def position(self):
+        """ Get the position of the window frame.
+
+        Returns
+        -------
+        result : Pos
+            The current position of the window frame.
 
         """
         if self.proxy_is_active:
-            self.proxy.close()
+            return self.proxy.position()
+        return Pos(-1, -1)
+
+    def set_position(self, pos):
+        """ Set the position of the window frame.
+
+        Parameters
+        ----------
+        pos : Pos
+            The desired position of the window the window frame.
+
+        """
+        if self.proxy_is_active:
+            self.proxy.set_position(pos)
+
+    def size(self):
+        """ Get the size of the window client area.
+
+        Returns
+        -------
+        result : Size
+            The current size of the window client area.
+
+        """
+        if self.proxy_is_active:
+            return self.proxy.size()
+        return Size(-1, -1)
+
+    def set_size(self, size):
+        """ Set the size of the window client area.
+
+        Parameters
+        ----------
+        size : Size
+            The desired size of the window client area.
+
+        """
+        if self.proxy_is_active:
+            self.proxy.set_size(size)
+
+    def geometry(self):
+        """ Get the geometry of the window client area.
+
+        Returns
+        -------
+        result : Rect
+            The current geometry of the window client area.
+
+        """
+        if self.proxy_is_active:
+            return self.proxy.geometry()
+        return Rect(-1, -1, -1, -1)
+
+    def set_geometry(self, rect):
+        """ Set the geometry of the window client area.
+
+        Parameters
+        ----------
+        rect : Rect
+            The desired geometry of the window client area.
+
+        """
+        if self.proxy_is_active:
+            self.proxy.set_geometry(rect)
+
+    def frame_geometry(self):
+        """ Get the geometry of the window frame.
+
+        Returns
+        -------
+        result : Rect
+            The current geometry of the window frame.
+
+        """
+        if self.proxy_is_active:
+            return self.proxy.frame_geometry()
+        return Rect(-1, -1, -1, -1)
 
     def maximize(self):
         """ Send the 'maximize' action to the client widget.
@@ -176,6 +288,36 @@ def send_to_back(self):
         if self.proxy_is_active:
             self.proxy.send_to_back()
 
+    def center_on_screen(self):
+        """ Center the window on the screen.
+
+        """
+        if self.proxy_is_active:
+            self.proxy.center_on_screen()
+
+    def center_on_widget(self, other):
+        """ Center this window on another widget.
+
+        Parameters
+        ----------
+        other : Widget
+            The widget onto which to center this window.
+
+        """
+        assert isinstance(other, Widget)
+        if self.proxy_is_active and other.proxy_is_active:
+            self.proxy.center_on_widget(other)
+
+    def close(self):
+        """ Close the window.
+
+        This will cause the window to be hidden, the 'closed' event
+        to be fired, and the window subsequently destroyed.
+
+        """
+        if self.proxy_is_active:
+            self.proxy.close()
+
     def show(self):
         """ Show the window to the screen.
 
diff --git a/enaml/wx/wx_window.py b/enaml/wx/wx_window.py
index d95b0995a..037ff0081 100644
--- a/enaml/wx/wx_window.py
+++ b/enaml/wx/wx_window.py
@@ -9,6 +9,7 @@
 
 from atom.api import Typed
 
+from enaml.layout.geometry import Pos, Rect, Size
 from enaml.widgets.window import ProxyWindow
 
 from .wx_action import wxAction
@@ -138,7 +139,9 @@ def init_widget(self):
         if d.title:
             self.set_title(d.title)
         if -1 not in d.initial_size:
-            self.set_initial_size(d.initial_size)
+            self.widget.SetClientSize(wx.Size(*d.initial_size))
+        if -1 not in d.initial_position:
+            self.widget.Move(wx.Point(*d.initial_position))
         if d.icon:
             self.set_icon(d.icon)
         self.widget.Bind(wx.EVT_CLOSE, self.on_close)
@@ -210,11 +213,78 @@ def on_layout_requested(self, event):
     #--------------------------------------------------------------------------
     # ProxyWindow API
     #--------------------------------------------------------------------------
-    def close(self):
-        """ Close the window
+    def set_title(self, title):
+        """ Set the title of the window.
 
         """
-        self.widget.Close()
+        self.widget.SetTitle(title)
+
+    def set_modality(self, modality):
+        """ Set the modality of the window.
+
+        """
+        if modality == 'non_modal':
+            self.widget.MakeModal(False)
+        else:
+            self.widget.MakeModal(True)
+
+    def set_icon(self, icon):
+        """ This is not supported on Wx.
+
+        """
+        pass
+
+    def position(self):
+        """ Get the position of the of the window.
+
+        """
+        point = self.widget.GetPosition()
+        return Pos(point.x, point.y)
+
+    def set_position(self, pos):
+        """ Set the position of the window.
+
+        """
+        self.widget.SetPosition(wx.Point(*pos))
+
+    def size(self):
+        """ Get the size of the window.
+
+        """
+        size = self.widget.GetClientSize()
+        return Size(size.GetWidth(), size.GetHeight())
+
+    def set_size(self, size):
+        """ Set the size of the window.
+
+        """
+        size = wx.Size(*size)
+        if size.IsFullySpecified():
+            self.widget.SetClientSize(size)
+
+    def geometry(self):
+        """ Get the geometry of the window.
+
+        """
+        # Wx has no standard way of taking into account the size of
+        # the window frame. I'm not spending time on a workaround.
+        point = self.widget.GetPosition()
+        size = self.widget.GetClientSize()
+        return Rect(point.x, point.y, size.GetWidth(), size.GetHeight())
+
+    def set_geometry(self, rect):
+        """ Set the geometry of the window.
+
+        """
+        self.set_position(rect[:2])
+        self.set_size(rect[2:])
+
+    def frame_geometry(self):
+        """ Get the geometry of the window.
+
+        """
+        r = self.widget.GetRect()
+        return Rect(r.GetX(), r.GetY(), r.GetWidth(), r.GetHeight())
 
     def maximize(self):
         """ Maximize the window.
@@ -246,32 +316,26 @@ def send_to_back(self):
         """
         self.widget.Lower()
 
-    def set_icon(self, icon):
-        """ This is not supported on Wx.
-
-        """
-        pass
-
-    def set_title(self, title):
-        """ Set the title of the window.
+    def center_on_screen(self):
+        """ Center the window on the screen.
 
         """
-        self.widget.SetTitle(title)
+        self.widget.CenterOnScreen()
 
-    def set_initial_size(self, size):
-        """ Set the initial size of the window.
+    def center_on_widget(self, other):
+        """ Center the window on another widget.
 
         """
-        self.widget.SetSize(wx.Size(*size))
+        widget = self.widget
+        rect = widget.GetRect()
+        geo = other.proxy.widget.GetScreenRect()
+        widget.Move(rect.CenterIn(geo).GetPosition())
 
-    def set_modality(self, modality):
-        """ Set the modality of the window.
+    def close(self):
+        """ Close the window
 
         """
-        if modality == 'non_modal':
-            self.widget.MakeModal(False)
-        else:
-            self.widget.MakeModal(True)
+        self.widget.Close()
 
     #--------------------------------------------------------------------------
     # Overrides