The Old Town Hall in Prague was founded in 1338 on the basis of a privilege granted to the Old Town citizens by King John of Luxembourg. The complex consists of several houses adjacent to the Old Town Square and gradually combined into one for the needs of the Prague Old Town Magistrate.

The Prague Astronomical Clock, Prague Orloj is a medieval tower clock installed on the south wall of the tower of the Old Town Hall on the Old Town Square in Prague. The watch shows years, months, days and hours, sunrise and sunset times, moonrise and moonset times, and the positions of the zodiac signs. In the center of the dial is the Earth, around which the Sun revolves. Every hour, when the clock strikes, there is a small performance in the tradition of a medieval puppet theater. The figures, which are the embodiments of human vices and such dominants of human life as death or retribution for sins, begin to move: the skeleton pulls the bell rope, the angel raises and lowers the punishing sword. In the windows of the clock, the faces of the apostles replace each other, and in the finale the rooster crows.