The oldest building in the District of Columbia was preserved because of a mistaken connection to George Washington.

Sit where JFK proposed to Jackie or where Nixon dined on meatloaf at this storied pub.

This 41,000-acre wetland complex is the largest marsh in the interior of the United States.

The remains of a World War II-era Japanese American internment camp dot a windswept Colorado hill.

The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.

An abandoned facility that has become a place of ritualistic satanic worship, or so rumor has it.

An inconspicuous suburban street corner is the site of San Diego's worst air disaster.

World's largest barrel containing an inn.

A labyrinthine network of chambers with a storied past hides below Edinburgh's South Bridge.

This obscure walkway links Edinburgh’s Old Town with one of the city's prime vantage points.

Two nations form a rare four-sided border at the peak of a mountain, philosophical questions result.

The fairy tale castle of the “fairy-tale king,” this was also the inspiration for Disney’s “Sleeping Beauty.”

The stones of this formerly witch-obsessed castle were used to build a church.

A small but immensely extravagant palace built by the "Night King."

Originally envisioned by King Ludwig II to rival Versailles, Herrenchiemsee's "New Palace" remains half-gilded for lack of funds.

This historic funicular system combines the old with the new while offering delightful views over the surrounding valley.

It's good luck to be mocked by this monkey.

This floating sculpture of ice is a poignant reminder of nature's power.

The design of this beautifully crafted building was inspired by Norwegian glaciers.

One man's exploration of the human form, including the bizarre and delightful "Man Attacked by Babies."

Sloth rehabilitation center in the jungle of Costa Rica.

This Costa Rican topiary park is a surreal garden of unearthly delights.

This bridge was constructed from the rubble of the infamous Bastille.

The spiral staircase hidden inside this giant Parisian column was likely built for Catherine de Medici's astrologer.