Places meltingknight Wants to Go

Scientists use one of the saltiest bodies of water on Earth as a terrestrial base for studying water on Mars.

The naval commander’s proudest moment in battle is memorialized in this unique tomb at Arlington Cemetery.

This unacceptably tall building was the real reason for Washington, D.C.'s skyscraper ban.

Rumor has it the hot dog stand was targeted by two Russian nuclear missiles.

The Pentagon sits on a former island that was in Virginia at low tide and D.C. at high tide.

A plaque marks the underground site of one of London's "lost rivers."

A suburban street in Anchorage doubles as a runway, and each home has its own airplane hangar.

During the summer, surfers in Alaska take advantage of this inlet’s unusual water patterns.

This sacred, circular cave is lined with pools so clear and still that it's hard to tell where the water begins.

Iceland's largest geothermal mud pool is a little bit haunted and a little bit dangerous.

Gigantic water vessel, permanently grounded in Southern Albania.

A medieval bridge stretches over a sulfur-rich river that leads to year-round natural hot springs.

An Art Nouveau building covered in animal gargoyles and grotesques.

The deepest metro station in the world.

The haunting complex honors the millions of Ukrainians who died in the forced famine under Soviet rule.

A quirky collection flush with information on commode culture from ancient times to modern day.

A rare wooden coffin set vertically into the Gothic arch of an ruined church.

A 168-foot tower, part of the abandoned Chester Leadworks facility.

People have been scribbling on this massive chunk of granite for more than 1,500 years.

Final resting place of John Middleton "The Childe of Hale."

Western Europe's only representation of a Roman goddess still in its original location sits in an unassuming park.

This submersible road connecting a French island to the mainland is lined with safety towers for when the tide strands travelers.

An aluminum skeleton brings Chinese mythology to the French shore.

Do these monsters look familiar? The gargoyles on this church are all from pop culture.