Went out on my own in Amsterdam, the Netherlands and Hamburg, Germany.
Amsterdam: We tried shrooms (legal there) in our hotel room and my friends were too messed up to go exploring. I wandered out a bit to a park near our hotel and took "the long way" home.
Hamburg: I was on a different time zone than my European friends so I went out early to look for souvenirs and coffee. Had to find my way back the hard way.