The Rathskeller Pizzeria located in the first floor of the Student Center is now featuring a pizza loyalty program! All pizza boxes are stamped with The Rathskeller "stamp of approval". Collect these stamps over time and get free pizza. It's that easy! Collect five (5) large pizza box stamps, return, and get the sixth (6) pizza free on us (the free pizza is a large cheese pizza). Who doesn't love free pizza?