The complex has been abandoned since the Croatian War of Independence, barring a stint as a set for 'Game of Thrones.'

This dazzlingly turquoise mountain lake was created in the wake of a natural disaster.

Hidden in a grotto 26 feet below Nottingham's oldest hotel, this stylish subterranean drinking den is notoriously hard to find.

This picturesque Umbrian city has a subterranean side that has long remained hidden.

This quaint Italian town keeps losing ground as the sides of its plateau slowly erode.

An unfinished tomb carved into a giant boulder in the Arabian Desert.

If it wasn’t for an innovative use of quilts during a crisis, the city of Panguitch might not exist today.

A monument to a survivor of harsh pioneer life, frostbite, and primitive surgery.

Water flowed out of the town's unusual tree stump fountain in the 1930s, and the well still runs today.

A stoic rock cairn is all that remains to remember one of the more brutal instances of frontier treachery in American history.

This plaque marks the site where the penultimate chapter in the journey of two doomed boys unfolded in an imagined parallel universe.

An Ancestral Puebloan ruin that appears to burst into flames in the sunlight.

A dazzling display of red rocks weathered into spires and hoodoos.

A quirky old tree covered in tokens, cans, and bottles of wishes.

Within the former ghost town of Cisco is a carefully restored tiny town with one resident and its own art residency.

The largest wildlife crossing in Utah allows local fauna to safely traverse the six-lane Interstate 80 at Parleys Canyon.

Where a guard killed nine German prisoners during one of the worst 20th-century POW camp massacres in U.S. history.

Few things look more out of place than the electric blue ponds in the reddish-brown desert of Utah.

The notorious Wild West outlaw was raised in this unassuming abode.

Eat burgers beneath gargantuan taxidermy and thousands of dollar bills in Utah's oldest continuously-operating bar.

The fifth-longest natural arch in the world, and the longest outside China.

A museum in rural Utah documents the history of the Japanese Americans who were forcibly relocated there.

A proto micro-nation sometimes populated by artists, surrounded on all sides by a Utah most barren.

A well-preserved Ancestral Puebloan ruin tucked beneath a desert cliff.