The Old Town Hall was established in 1338 as the seat of the Old Town administration. The oldest part of the complex consists of a beautiful Gothic tower with a bay chapel and a unique astronomical clock – known as the Orloj – where, every hour between 9 am and 11 pm, the twelve apostles appear.
The Old Town Hall Tower is undergoing general repair. While its observation deck is open to public, the Prague Astronomical Clock will be repaired in 2018. Starting the 8th of January, the medieval clock will be taken apart. It will be back in place in August 2018.