The Astronomical Clock is located in the heart of the city, Old Town. Being the third oldest clock in the world and still working, the Astronomical Clock is a masterpiece of engineering. The legend about the creator of the clock is also interesting: after having built the clock, the master Hanuš has been blinded, so that he could not repeat his work in another city. As a revenge, master Hanuš suicided by jumping inside the gears of the Astronomical Clock, permanently damaging the functioning of the clock with his body. Since master Hanuš was the only person to know how the clock was working, it took more than a century to understand the design and restore the clock.