2 Best Sights in Moravia, Czech Republic

A Cold War–era relic, this highly classified (hence the "10-Z" code name) shelter was designed to protect the political elite of the region in the event of a nuclear attack. Built during the Nazi occupation in World War II as a bomb shelter, between 1945 and 1948 it was used by a wine wholesaler, after which it served as a secret shelter until 1989. Up to 500 people could have stayed inside if needed, but fortunately no one had to. It was declassified and opened to the public in 2015. There is an exhibition about the Cold War at the entrance with English text. Guided group tours of the whole complex with a flashlight (provided) take place as well, with some at night. On the tour you can see underground offices, a phone switchboard, heavy doors, and other curious infrastructure. The entrance is across the street from Husova 12. Tour tickets are available at the Tourist Information Center at Panenská 1.

Some 2,296 feet of underground passages are filled with exhibits relating to alchemy, medicine, medieval punishment, and the more mundane aspects of life—like storing wine. Some of the old passages were rediscovered in the 1970s and have undergone years of archeological research before opening to the public in 2011. Unfortunately, explanatory plaques are only in Czech.