Natural time capsule containing an alien ecosystem.

There's a 12-foot-tall replica of the Washington Monument hidden under a manhole nearby.

A Prada store in the West Texas desert that is never open for business.

A monument to Lenin has been transformed into a statue of everyone's favorite black-helmeted, fool-choking Sith Lord.

A lovers' beach, tucked below the surface of the island, provides a safe haven for romance.

Originally built as a promotional giveaway, this suburban house was designed to be an IRL version of the Simpson home.

Visitors come from all over to bring gifts and tokens to the grave of Alice, who is thought to have died of a broken heart.

The uniquely-designed winter home and sculpture studio of Anna and Archer Huntington.

A plaque and memorabilia collection mark where A&W got its start.

A 131-year-old wunderkammer of Texas history.

This wondrous hideaway is suspended in a bamboo forest above a sanctuary for rescued llamas and alpacas.

What else would you call a playground hidden in Alabama's oldest and largest cemetery?

One person's lost luggage is another person's treasure.

This tiny little island has, as the name says, just enough room for its single house.

Before it was buried by volcanic ash, this fast-food restaurant fed the hungry hordes of ancient Rome.

The pretty iron lamp is a reminder of the architecture underneath London's streets.

All that's left of the quintessential "cabin in the woods."

A stack of stones steeped in Irish folklore, much like the hero they're connected to, hide in plain sight.

Running under an entire mountain, the longest highway tunnel in North America is kept fresh using portal fans and jet fans.

It's believed King John of England stayed at this 13th-century castle before riding off to sign the Magna Carta.

This house proudly displays an interactive and continuously changing exhibit of lawn flamingos.

This unique bed and breakfast was first constructed during the 1800s by a Russian immigrant family.

One of the oldest living oak trees in the Southeast.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.