Outside of the US I've been to Puerto Rico, Vieques (a tiny island off of PR), and the UK.
Vieques was by far the most exotic and fun. Horses roam the island and go wherever they please from frolicking on the beach to grazing in the school yard. You get fined if you harm one. Their eyes don't reflect since they're not nocturnal, so you have to be very careful when driving at night. The culture is like taking a step back in time. Slow pace. Conservative. Folks are up early in order to catch the ferry to the mainland and they go to bed early. Some bars stay open late if the crowd is good enough, but for the most part everything shuts down around 8pm. Chickens and cats run the street.
I'd have to say the most exotic animal I saw while there was the mongoose. They're fast so I only caught glimpses of them darting across roads. Best part about them being there is you don't have to worry about snakes.
Hmm, the most exotic food I ate was conch, but my favorite to look at was spiny lobster. They look totally different than Maine lobsters...almost spiderlike. Kinda creepy.
The most interesting thing there is the bio bay. There are only 5 on the entire planet. Micro-organisms called dinoflagellates feed off of dead mangrove leaves. They glow whenever the water is disturbed. I kayaked in the bay and then the instructor told us to swim. It was one of the most incredible experiences of my life, like swimming in sparkling fairy dust. You could even tell where the fish were because they'd leave a glowing trail under the water's surface.
There are so many places I want to visit, but the only one on my bucket list is Machu Picchu in Peru. I like the history and architecture, and would find the hike to be a beautiful challenge.
I've enjoyed reading everyone's stories. Keep em comin!