The Lennon Wall
A strangely reverent place, the Lennonova zedʼ (Lennon Wall), in Velkoprevosje námeste opposite the French Embassy, first started to be covered with democratic and pacifist graffiti after the death of John Lennon in 1980.
Needless to say the communist authorities did not approve, but as fast as the police whitewashed the wall, the slogans and artwork would reappear.
Now more of a shrine to Lennon and the Beatles than to democracy and pacifism, it still seems to command a lot of respect. There were virtually no obscenities when I was there (and that which there were, were probably down to English drunks), and there was an air of hushed reverence, so noticeably missing from Katedrála svatého Víta (St Vitus Cathedral) at the top of the hill.