Where is this: a lively crowd of young people gathers outdoors, cheering at an event
Date1990s
Place
Czechoslovakia
pretty sure PIS is cs.wikipedia.org
Prague
same as above50.0869950, 14.4208820, 145°people are looking up at astronomical clock, the arch is one of the houses in front of it (yellow one in this photo a4.pbase.com)
Judging by the crowd, clothes and items (Converse shirt, Chinon 3001 camera released in 1987 worth $350, glasses looking very much like RayBan Aviator) many are western tourists so very likely after 1989. Haircuts are also late 80s/early 90s.