The National Theatre with a No 6 tram rolling past. Many years ago, I had a friend (Klara) who was a ballerina with the National Ballet. To see her dance in Swan Lake, I and her best friend snuck in a back door, said hello to her before the performance began near the dressing rooms, then entered the auditorium by a back door, and watched the whole ballet from one of the executive boxes - all for free... Those were the days in Prague when you could get away with virtually anything, and nobody cared :)