This limestone cave offers an incredible view of the Río Grande de Arecibo valley.

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

This museum preserves the heyday of Puerto Rican coffee.

La Cara del Indio honors the Taíno chief who fought bravely against the Spanish invasion of Puerto Rico.

These red and black houses were awarded to the firefighters who saved their city from an enormous blaze.

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

Archaeological sites and great food inside the island's largest mangrove forest.

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

This giant bronze image of Christopher Columbus embarked on a voyage of its own.

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

An unnatural lake in a naturally beautiful setting.

Legend tells how a Spanish soldier disappeared from this isolated sentry box without a trace.

This tiny home was originally a narrow alleyway.

A magnificent waterfall nestled in the heart of the El Yunque National Forest.

The world's second largest single-dish radio telescope, once used to contact E.T.

The world's brightest bioluminescent bay.