Ushuaia, Argentina, feels like the end of the world -- because it basically is. At the southernmost tip of Argentine Tierra del Fuego, it's as far south as you can go without heading to Antarctica. In fact, this is one of the departure points for boats headed to the coldest continent.
But Ushuaia isn't just for southbound travelers and sea lions (although there are lots of those). It's a place with an interesting history as a prison colony, stunning snowcapped Andean peaks, great seafood and fascinating wildlife.
It's also almost painfully beautiful. This is a photo of the Faro de Les Eclaireurs, in the Beagle Channel off of Ushuaia, taken on a boat ride through the channel and around its islands. It's one of my favorite photos I've ever taken, in one of my favorite places I've ever been.
(although I imagine the boat tour is even more fun when one is not painfully hungover from a night spent drinking with Australians in one of the two inexplicable Irish pubs in town. Just a word of advice.)