St. Martin is an island in the Carribean split by the Dutch (Sint Maarten) and the French (Saint Martin). The south half of the island is Dutch, while the North half is French. The main towns are Philipsburg (Dutch) and Marigot (French). This is a fairly popular spot for tourists, especially as a cruise ship stop. If you happen to be a cruiser stopping here, bring your bouldering shoes and a chalk bag.
While this probably isn't a climbing destination, I've heard there are some routes on the island. There are certainly boulders to explore. If you know of any longer routes, post'em up!