Eco-friendly island mansion.

You can spend the night as an honorary lighthouse keeper in this quaint, historic beacon.

An unexpected Easter egg lurks in the background of a cherub wall relief at the Breakers mansion.

Three and a half miles of cliffs, rocky beaches, Gilded Age mansions and 40 Steps to nowhere in particular.

The site of the largest mass execution in Rhode Island history, haunted by the ghosts of hanged pirates.

This cannonball stands as a reminder of the final act of a fleeting governor amidst a revolution.

A cement mixer-turned-kaleidoscope in downtown Norfolk offers different views of the city.

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

A park where people have been going to feed friendly pigeons since the 18th century

This colorful gate stands as an entrance to the walled city of Old San Juan.

This bleach-white graveyard overlooking the ocean is accessed through a tunnel.

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

Pensacola's UFO home has withstood many hurricanes—just as the experimental 1960s design intended.

One of the only Florida forts to remain in the hands of the Union all through the Civil War still stands as a historic stronghold.

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

One of the world’s largest and deepest freshwater springs, where mastodons once roamed.

A humid oasis combines recreation with exploration in a unique underwater cavern.

The only road through the heart of Glacier National Park.

The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

Two hula hoops appeared on the tree after a storm, and the collection kept growing.

A time capsule of Floridian history fights to survive on the banks of Chokoloskee Bay.

The smallest post office in the United States is no bigger than a broom closet.

In the depths of the Everglades, one man has dedicated his life to studying the elusive Skunk Ape.

Here’s how Robert the Doll earned his reputation as the most haunted doll in the world.