Dine on ceviche tacos in the sea at this floating restaurant only accessible by boat.

Rumored to be the famed pirate's lookout tower, this historic stone structure is now just watching for tourists.

This beachside town is home to a diverse nature reserve, multiple cays, and one of the three bioluminescent bays in Puerto Rico.

A resilient tree that has survived for more than 700 years in Guánica Dry Forest.

Everyone from Alan Ginsberg to The Rolling Stones has stopped by this classic dive bar.

Swim or sail to this pie-slinging boat off the coast of St. Thomas.

A rare underwater observatory in the Caribbean that provides breathtaking views of vibrantly colored aquatic life.

This 20th-century mansion plays a key role in one of Puerto Rico's greatest novels.

Invading U.S. troops were first seen from this now-abandoned tower, leading to the Spanish-American War.

This memorial to a family's dead son has survived a century of hurricanes and earthquakes.

The crumbling remnants of this 19th-century quarantine hospital hint at the touristy island's darker past.

This small fort played a huge role defending Puerto Rico’s capital city.

A former pyramid-shaped library with colorful murals lies just across the bay from Old San Juan.