Every hour, on the hour, crowds gather beneath the Old Town Hall Tower to watch the Astronomical Clock in action. Despite a slightly underwhelming performance that takes only 45 seconds, the clock is one of Europe's best-known tourist attractions, and a 'must-see' for visitors to Prague. After all, it's historic, photogenic and – if you take time to study it – rich in intriguing symbolism.

　　Four figures beside the clock represent the deepest civic anxieties of 15th-century Praguers: Vanity (with a mirror), Greed (with his money bag; originally a Jewish moneylender, but cosmetically altered after WWII), Death (the skeleton) and Pagan Invasion (represented by a Turk). The four figures below these are the Chronicler, Angel, Astronomer and Philosopher.

　　On the hour, Death rings a bell and inverts his hourglass, and the 12 Apostles parade past the windows above the clock, nodding to the crowd. On the left side are Paul (with a sword and a book), Thomas (lance), Jude (book), Simon (saw), Bartholomew (book) and Barnabas (parchment); on the right side are Peter (with a key), Matthew (axe), John (snake), Andrew (cross), Philip (cross) and James (mallet). At the end, a cock crows and the hour is rung.