The communism was full of paranoia, spying and violence in Czech Republic. Prague Spring and the soviet invasion of 1968, the student Jan Palach.. Cold war stories, the End of Communism - Velvet Revolution in 1989. A good tour to visit a nuclear bunker from 1950s, build for 5000 people, hidden 4 floors deep. It now contains the nuclear war museum, with gasmasks, military equipment gives an impression on the past. It's generators are tested every week tho and the bunker is fully operational. The visit is only possible in this a small part.