The first feature here is the Astronomical Clock , moving with the seasons and providing tourists with a performance on the hour of parading apostles, skeleton and squawking rooster for hundreds of years. The old town hall it is attached to was almost totally destroyed by retreating Nazi troops in the final days of WWII. Standing opposite is the Tyn Church , looking rather Disney like with its tall spires. Inside are buried the remains of Danish Astronomer Tycho Brahe , his demise brought on by etiquette. His bladder burst at dinner with the emperor as it was considered rude to leave the table before him. The bronze statue at the base of the square commemorates Jan Huss, religious martyr and activist. He was the first to question actions of the Catholic church during the 15th C. He blamed the plagues and disease sweeping the continent on slack moral fibre, particularly the Church attitude to selling indulgences. He was burned at the stake as a heretic in 16th July 1415. His followers were called Hussites and continued the struggle for many years. Open every day.