Your most spontaneous trip

Guys, tell me about your most spontaneous trip. I think these trips are the most memorable ones, so feel free to share your stories!

Oh, we visited the Czech Republic once, even though we just wanted to go to one pub in Germany. Europe is not really big, so it's not a problem to visit a few countries there during one ride.

I remember when me and my friends were in Finland for two weeks, one of them decided to take a two-day trip to Russia. Thankfully, I had a 3-year russian visa at that time, and I could support his idea. We didn't plan it at all, so it was really fun, and I'm glad that we did it because the memories are the best.