In addition to the beautiful old town, with the Rathaus and the Alte Aula of the University, Tübingen's main attractions is the Hohentübingen Castle, where you will also find the University Museum with permanent exhibitions on Ancient Cultures.
Just outside the town is instead the wonderful Bebenhausen Circestian Monastery from the 12th century. Coming back from there you may also enjoy a walk through the Schönbuch Nature Reserve.
Other museums and sights in town: