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While in San Juan, be sure to visit its iconic landmark, the Castillo de San Felipe del Morro - often referred to simply as El Morro. This stone citadel has kept watch over the city for four centuries, so a tour through it is like walking back in time.

Nature lovers are in for a treat when they visit El Yunque, which means "The Anvil." It is a beautiful rain forest that clings to the mountainous terrain just a few hours outside of San Juan. You'll find peace and tranquillity amongst the verdant foliage, waterfalls, and sweeping panorama.

You can go "down under" while in Puerto Rico at the Camuy caves. The third largest cave system in the world, tour guides offer a subterranean adventure that involves enormous caverns, underground rivers, and wildlife that has adapted to these conditions.

If you want a relaxing beach getaway far removed from the resorts and hustle of tourist traps, then you should visit Culebrita. It's only accessible by boat, so you're sure to have plenty of space to yourself. It is considered one of Puerto Rico's finest beaches.

Those who revel in wildlife will get a real kick out of the Vieques Biobay. Head out in a kayak on a dark night through the forests of mangrove and you'll understand why this area is so unique. The bioluminescent fish glow in the dark!