Clementinum. Unique historical place, in the center of Prague, 5 minutes from the Old Town Square and Charles Bridge. The Clementinum has been remodeled many times. New rooms and churches were built in. You can visit here. The mirror chapel. University library. The astronomical tower. The Church of Christ the Savior. Mathematical Museum. Room of the meridian. But up to now, this complex has lived in excellent condition, it occupies the 2 nd place on the scale after the historical complex - Prague Castle.