Santa Catalina, Providencia, and San Andrés, Colombia
The geography here might be a little confusing since these islands are actually closer to Nicaragua and Panama than they are to Colombia. In fact, as they're in the Caribbean Sea, they're obviously NOWHERE near Colombia. Then again, the Jets and Giants play in New Jersey, so whatever.
That said, you’ll forget all about stuff like “geography” when you visit this archipelago known collectively as the Seaflower Biosphere Reserve. At some points, the water is so shallow between islands that you can actually walk through the Caribbean to get from one to the other. And with multiple beachside bars, this makes for one of the coolest bar crawls in the world.
If drinking in the water isn’t your top vacation priority, the islands are fairly undeveloped and offer some of the best snorkeling and shallow-water diving around. And the hikes on volcanic Providencia provide photo ops that will guarantee you lose friends on Instagram.