diff --git a/WPF-1/WPF1-Unterfenster/WPF1-Unterfenster/MainWindow.xaml b/WPF-1/WPF1-Unterfenster/WPF1-Unterfenster/MainWindow.xaml
index 8597539..09c011e 100644
--- a/WPF-1/WPF1-Unterfenster/WPF1-Unterfenster/MainWindow.xaml
+++ b/WPF-1/WPF1-Unterfenster/WPF1-Unterfenster/MainWindow.xaml
@@ -7,6 +7,7 @@
         mc:Ignorable="d"
         Title="Community Fragen - WPF-1" Height="287" Width="460" Background="#00A8C6">
     <Grid>
+        <Button Content="Zusätzliches Fenster öffnen" HorizontalAlignment="Center" Margin="0,88,0,0" VerticalAlignment="Top" Background="#F9F2E7" Click="Button_Click"/>
 
     </Grid>
 </Window>
diff --git a/WPF-1/WPF1-Unterfenster/WPF1-Unterfenster/MainWindow.xaml.cs b/WPF-1/WPF1-Unterfenster/WPF1-Unterfenster/MainWindow.xaml.cs
index 8dc246e..25a4530 100644
--- a/WPF-1/WPF1-Unterfenster/WPF1-Unterfenster/MainWindow.xaml.cs
+++ b/WPF-1/WPF1-Unterfenster/WPF1-Unterfenster/MainWindow.xaml.cs
@@ -24,5 +24,11 @@ public MainWindow()
         {
             InitializeComponent();
         }
+
+        private void Button_Click(object sender, RoutedEventArgs e)
+        {
+            SubWindow sub = new SubWindow();
+            sub.Show();
+        }
     }
 }
diff --git a/WPF-1/WPF1-Unterfenster/WPF1-Unterfenster/SubWindow.xaml b/WPF-1/WPF1-Unterfenster/WPF1-Unterfenster/SubWindow.xaml
new file mode 100644
index 0000000..fc47da5
--- /dev/null
+++ b/WPF-1/WPF1-Unterfenster/WPF1-Unterfenster/SubWindow.xaml
@@ -0,0 +1,12 @@
+<Window x:Class="WPF1_Unterfenster.SubWindow"
+        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+        xmlns:local="clr-namespace:WPF1_Unterfenster"
+        mc:Ignorable="d"
+        Title="Unterfenster für WPF-1" Height="253" Width="533" Background="#F9F2E7">
+    <Grid>
+        <TextBlock Text="Hier könnten die Elemente für die Einstellungen angezeigt werden." Margin="88,88,0,0" Foreground="#00A8C6" FontWeight="Bold"/>
+    </Grid>
+</Window>
diff --git a/WPF-1/WPF1-Unterfenster/WPF1-Unterfenster/SubWindow.xaml.cs b/WPF-1/WPF1-Unterfenster/WPF1-Unterfenster/SubWindow.xaml.cs
new file mode 100644
index 0000000..1b2f387
--- /dev/null
+++ b/WPF-1/WPF1-Unterfenster/WPF1-Unterfenster/SubWindow.xaml.cs
@@ -0,0 +1,25 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Data;
+using System.Windows.Documents;
+using System.Windows.Input;
+using System.Windows.Media;
+using System.Windows.Media.Imaging;
+using System.Windows.Shapes;
+
+namespace WPF1_Unterfenster
+{
+    /// <summary>
+    /// Interaktionslogik für SubWindow.xaml
+    /// </summary>
+    public partial class SubWindow : Window
+    {
+        public SubWindow()
+        {
+            InitializeComponent();
+        }
+    }
+}