This is such a curiosity. In Prague downtown you can find this crooked tower slightly resembling the tower of Pisa in Italy. It is the Šítkovská Water Tower built in the 16th century on a bank of Vltava river. When you look closely you may notice a certain deflection of the tower… it is exactly 1,15 m to the south-east.
Besides that, the top floor used to be a spying spot of communistic Secret Police for many years as it has the perfect view of the house where Václav Havel, the first democratically elected president of Czechoslovakia used to live. The house was monitored 24 hours a day in the 70s to see who was visiting Havel, when, and for how long.
Don´t forget to look back when standing in front of the tower, right behind you is "Dancing House" resembling a dancing couple (Ginger and Fred).