Palace Adria designed by Pavel Janák in 1924 - Pavel Janák is one of my favourites czech architects. His rondocubism is stunning. By the way cubist architecture is tipical only for czechoslovak lands. It was National style of the First republic of Czechoslovakia.
Dům u kamenného zvonu - Stome bell house - On the Old town square stands this gothic house from the 14th century. Legends say that in this house was born Charles IV. the king of Bohemia and the emperor of the Holy Roman Empire. Now there is National Gallery in Prague.