where to party

I’m flying in to London May 12th, heading down to Paris, then Amsterdam, then as many countries as I can making my way down towards Italy and Greece, I want to hit Turkey if I have the time. But I definitely want to have fun on this trip! Last summer I came and saw a lot of museums and statues…took a lot of naps, and went home bored.
I’m 25, and want to get CRAZY this summer!!!! Where do I go?! Anywhere’s an option, any suggestions??? I’ve got 2 months free to roam Europe!
~yoshi