This small, nautical gift shop is home to a 500-pound behemoth.

The restaurant keeps a hidden séance room on the second floor and reserves a table for the spirit of the former owner each night.

The only statue of its kind to commemorate Washington's beginnings as an officer of the British Colonial Militia.

A living maritime paradox still floats in the same lake where it was built and resurrected... or was it?

The abandoned mine where American troops discovered a treasure trove of art and artifacts hidden by the Nazis.

A French chateau, failed utopian community, odd museum, and Stonehenge replica in rural Washington State.

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

A logging-themed roadside restaurant surrounded by museum-quality machinery and artifacts from the industry's heyday.

A Roman-style column in Oregon hides a spiral staircase inside.

An important Mayan religious and trading center dating back to 200 BC.

Clap your hands at the base of the pyramid, and the song of a sacred Mayan bird will echo through the air.

Every equinox this Maya pyramid puts on a spooky ancient light show.

A magical sinkhole on the Yucatán Peninsula is adorned with mini waterfalls and hanging vines.

The only royal palace on U.S. soil has been a territorial capitol, a military headquarters, and a prison for a queen.

Once the site of the Hawaiian monarchy, this building was originally designed as a palace.

An ode to one of the first concerts broadcast via satellite.

On Waikīkī Beach, a monument to four extraordinary individuals of dual male and female spirits who brought the healing arts from Tahiti to Hawai'i.

Hiding in plane sight.

Climbing this abandoned railway leads to breathtaking vistas of O‘ahu.

A glass display case holds the document that ended the Second World War—which one person signed on the wrong line.

Race through the maze, get your name on the sign.

This coastal cavern is associated with the Hawaiian god of creation.

This blowhole is supposedly caused by a trapped monster.

This ruined fort and statue are a testament to the last king of Kaua‘i’s savvy diplomacy skills, which briefly brought Russians to Hawai‘i.