One of the only places where Earth’s mantle lies above water.

Inside this McDonald's you can dine on your Big Mac and fries next to a 2,500-year-old Roman wall.

An antique store houses the last operational diner from the defunct department store chain.

This cave system allegedly holds the "metallic library" of a lost ancient civilization.

This unassuming tree stump reportedly traces its roots to the famous pharaoh queen's reign.

An incredibly well-preserved piece of ninth-century Viking poop.

Over 100 towers were built in Bologna during the Middle Ages, but only 22 survive.

Dubbed the "Blade Runner dragon," this buzzing neon sign is a beloved local icon.

The mysterious headstone of an unidentified bank robber was seen visited, every year, by a woman in black.

All that remains of this small town is its mass grave and a myth of a voodoo priestess who predicted its demise.

A mysterious monument where a woman who records say never existed was burnt alive for being a witch.

The Arctic Archipelago is home to world's largest third order island: an island in a lake on an island in a lake on an island.

The remains of a enormous earthen figure of unknown origins cuts across a rural Wisconsin road.

Four bald cypress trees in Lafayette Square, across from the White House, mark the southern edge of a 100,000 year old cypress swamp.

A renegade art installation in a small Vancouver park is now officially sanctioned by the City Parks Department.

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

This centuries-old Italian chapel hangs midway down a sheer cliffside.

A part of the world's largest marsh seems to be growing bright red Martian grass.

The oldest hotel in the world has been operated by the same family for over 1,300 years, even catering to samurai.

This otherwise innocuous bodega was once the headquarters of the most feared assassin's guild in American history.

A nearly 500-year-old sculpture depicts a man eating a sack of babies, and no one is sure why.

Dedicated to the art and science of glass in equal measure, this space is as much laboratory as museum.

The largest treasure hoard in Europe is contained in a castle that was bombed out during World War II.

The cell which saved the life of Ludger Sylbaris, "the man who lived through Doomsday."