Wander through the cobblestone streets of this historic district, home to colorful buildings, El Morro Fort, and the San Juan Cathedral.

Experience the magical glow of bioluminescent waters in Mosquito Bay on Vieques Island or Laguna Grande in Fajardo.

Explore the only tropical rainforest in the U.S. National Forest System, offering hiking trails, waterfalls, and diverse flora and fauna.

Discover the third-largest underground river cave system in the world, featuring impressive caverns and sinkholes.