These remote Florida islands have a history of sea turtles and sunken treasures, and one of the world's largest coastal brick fortresses.

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

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

On this Puerto Rican island, many abandoned naval ammunition bunkers sit open while a few have been padlocked by locals as personal storage.

This beach pool offers a spectacle of crashing waves, blue hues, and a historical lighthouse.

The short hike is worth the stunning views and crystal blue waters of a secluded beach.

The world is full of swimming holes, but few compare to Samoa’s idyllic To Sua ocean trench.

The largest stone moai on Rapa Nui.

A lovers' beach, tucked below the surface of the island, provides a safe haven for romance.