Puerto Rico is blessed with fascinating sites that played an important role in Spanish history. San Juan Fort, a former defensive outpost, is listed as a World Heritage Site to preserve its beauty and historical significance. For 250 years, the buildings have managed to withstand the test of time and even survived a strike from celebrated British explorer, Sir Francis Drake. From this site of beauty you'll also be able to take in the exceptional views of the Atlantic Ocean. Take a guided tour of the fort to learn more about its history and when you've finished there, you should check out the Governor's Mansion as well. There is a free daily shuttle to take you to the fort.