Once the product of an inexplicable gold strike, this ghost town is now home to one man and his love of classic machines.

The Pope’s secret escape route.

The crypts of Capuchin friars decorated with the bones of over 4,000 friars, including an entire "crypt of pelvises."

This narrow coastline trail through the dense Kauai wilderness is among the most beautiful and dangerous in the world.

This black shoreline is made up of exploded lava particles.

In 2018, Pohoiki Road was severed by lava flowing from the eruption of Kilauea.

Watch the newest land on the planet form before your eyes.

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

This WWII plane died a quiet death, and is now a garden eel playground.

This legendary urban waterfall creates a dazzling display of rainbows.

These ancient sacred grounds granted amnesty to those who managed to reach them.

Get up close and personal with these majestic fish.

Take shelter from Hawai'i's tropical heat under the massive canopy of largest Banyan tree on the island.

The remnants of two World's Fairs are here, complete with a 12-story globe, a mini-Manhattan, and a UFO-shaped pavilion.

Read between the lines of the subway map to find the hidden abandoned Civil War fort.

This brick-lined pedestrian walkway was once a railway tunnel used during the Civil War.

A former major munitions plant that has been converted into a sprawling art space.

The tomb was guarded by soldiers from both sides of the war, and some left their initials carved in the brick.

The graveyard holding the remains of George Washington's slaves was forgotten for nearly 200 years.

This stately building in Alexandria, Virginia was built by Freemasons to honor one of their most famous members.

The only place for a truly presidential dram.

This colonial tavern played host to George Washington, Thomas Jefferson, and other famous early Americans.

The narrowest house in America is seven feet of pure spite.

This advertisement for talcum powder was painted on the rock face and has since defied removal.