A vast array of tropical plants collected by a vacationing couple.

A dramatic, 360-degree recreation of Pickett's Charge in the Civil War.

This chapel on a cliff is renowned for its healing powers and was founded on the site of a supposed divine intervention.

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

This former sugarcane transport tunnel is now a portal to a lovely beach.

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

The highest peak in Puerto Rico is home to a rare fern that can only be found on six trees at its summit.