Best Holidays

My high school has the tradition of, before starting the senior year, going to France (yes, I know that it sounds crazy) during two weeks with all our classmates and five teachers, and then we have the option of staying a while longer all by ourselves. I ended up spending whole extra month with two of my best friends.
It was crazy, we went to so many places! After France, we went to Amsterdam, Rome, Florence, Venice, Barcelona, Prague, Berlin and a little town in Germany, but it's name remains, until today, a mystery for me.
We did so many things. It was crazy the amount of things we would do on a day, the number of places we visited. When we were alone we also would do everything we could, we had a crazy routine of getting very early in the morning and getting back to wherever we were staying (usually it was a cheap B&B) only for sleeping. 
It has been my best holiday so so far for many reasons, but mainly because I was expecting this trip since my older sister make it (when I was 8 years old!) and because I got to share this with some really good friends, after 2 years of planning it.