The only National Monument ever to go missing for nearly 50 years then resurface in a dump.

Largest Roman Catholic church in North America.

At 207 feet, one of the world's longest continuous escalators.

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

A sculpture made of 10 Cadillacs as a monument to the "Golden Age" of the American automobile.

No telescopes, no power, no gift shop: The Observatory of Chichen Itza, one of the world's oldest observatories, takes astronomy back to basics.

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

If you can look past the nearby sewer pipes, this urban sinkhole grotto is a mini-paradise.

The sister plane of the C-123 shot down during the Iran-Contra Affair has found a new purpose in retirement.

Costa Rican accommodation resembles a crash site, but with a nice balcony.

This private residence was the template for one of the most beloved television homes of all time.

The last remaining relic of San Francisco's glittering 1915 Panama Pacific Exposition.

The oldest burial ground in the city, final resting place of city founders, Ohlone natives and murderers alike.

The restored and active Victorian-era final resting place of San Francisco.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

Introducing the Green Fairy to her fawning masses.

A 200-year-old bar in the historic French Quarter refuses to give up its place in history, nor its role in securing ours.

The oldest cemetery in New Orleans, resting peacefully for over 200 years now.

This symbolic piece of New Orleans architecture is also home to a few ghastly stories.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

Huge abstract sculptures of the Puerto Rican Flag.

This shop for all your super spy needs hides an educational secret.

The twin towers in this Chicago fountain use 50 foot tall video screens to spit on people.