diff --git a/Scripts/CentOS-Web/Apps/Unknown/__init__.py b/Scripts/CentOS-Web/Apps/Unknown/__init__.py
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/Scripts/CentOS-Web/Apps/Unknown/__init__.py
diff --git a/Scripts/CentOS-Web/Apps/Unknown/page.py b/Scripts/CentOS-Web/Apps/Unknown/page.py
new file mode 100755
index 0000000..42be887
--- /dev/null
+++ b/Scripts/CentOS-Web/Apps/Unknown/page.py
@@ -0,0 +1,47 @@
+"""Support module for page layout inside `Unknown' web application.
+
+"""
+from Apps import page
+
+app = page.Layout()
+
+
+def page_content():
+    """Returns page content."""
+    output = app.tag_p('', [12,1], 'The page you tried to open was not found in this server. Try one of the links above to start over.')
+    output = app.admonition('Warning', 'Page not found.', output)
+    return output
+
+
+def main():
+    """Returns final output."""
+
+    # Define page name. This value is used as reference to determine
+    # which application to load and what tab in the navigation bar to
+    # focus on.
+    app.name = 'Unknown'
+
+    # Define page title. This value is dislayed on the browser's title
+    # bar. Notice that we concatenated the page class default value
+    # here.
+    app.title += ' :: Page not found'
+
+    # Define page header. This is the information displayed
+    # between the page top and the page content.
+    app.header = app.logo()
+    app.header += app.google()
+    app.header += app.navibar()
+
+    # Define page body. This is the information displayed between the
+    # page header and page footer.
+    app.body = page_content()
+
+    # Define page footer. This is the information displayed between
+    # the page bottom and the page content, the last information
+    # displayed in the page.
+    app.footer = app.credits()
+
+    # Define page final layout. 
+    html = app.page()
+
+    return html
diff --git a/Scripts/CentOS-Web/centos-web.cgi b/Scripts/CentOS-Web/centos-web.cgi
index 557558b..d137638 100755
--- a/Scripts/CentOS-Web/centos-web.cgi
+++ b/Scripts/CentOS-Web/centos-web.cgi
@@ -49,6 +49,8 @@ def main():
         from Apps.Home import page
     elif app == 'sponsors':
         from Apps.Sponsors import page
+    else:
+        from Apps.Unknown import page
     
     print 'Content-type: text/html' + "\n"
     print page.main()