Another popular underground attraction worth visiting is the fascinating Labyrinth under Zelný trh square (Labyrint pod Zelným trhem), which includes a tour of the many old medieval tunnels and underground corridors that meander under the heart of the city's old vegetable market.
These old cellars, in use since the 13th century to store food, now contain fascinating displays relating to their former use, as well as about their use as a prison.
