Prague is probably the city i want to visit the most and for the 3rd year in a row, is one of my options for my holidays. Who knows, it may happen this year.
"Old Town Square is a historic square in the Old Town quarter of Prague. Located between Wenceslas Square and the Charles Bridge, Prague's Old Town Square is often bursting at the seams with tourists in the summer. Featuring various architectural styles including the gothic Tyn Cathedral and baroque St. Nicholas Church, the square is an oasis for travelers wearied by Prague's narrow streets. Among many churches, tourists may find the Astronomical Clock on this square, while the tower at the Old Town Hall offers a panoramic view of Old Town.
The Orloj is mounted on the southern wall of Old Town City Hall in the Old Town Square and is a popular tourist attraction.
The Orloj is composed of three main components: the astronomical dial, representing the position of the Sun and Moon in the sky and displaying various astronomical details; "The Walk of the Apostles", a clockwork hourly show of figures of the Apostles and other moving sculptures; and a calendar dial with medallions representing the months." - in: wikipediaPrague Old Town and Charles Bridge.