Take a day trip to the nearby town of Klosterneuburg, which is home to the stunning Klosterneuburg Monastery. The monastery is one of the oldest and most important in Austria, and it houses a museum, a library, and a winery. After lunch, head to the Vienna Woods, a beautiful forested area just outside of Vienna. Here, you can hike, bike, or simply enjoy the natural beauty of the area. End your day by visiting the Schönbrunn Palace, a stunning Baroque palace that was once the summer residence of the Habsburgs.