What are Your Best Horse Travel Adventures?

I'm thinking about horse adventures. I want to hear about yours: That's the theme of this upcoming week: Horse adventures. The parameters? totally open. What was the craziest trip you ever took in search of a horse?
What's the best horse art exhibit you've ever seen?
Hair raising trail ride?
Coolest horse thing you've seen in a foreign country?
Or???
Can't wait to read them.