A lasting testament to the Klondike Gold Rush.

The stickered marker pinpoints where the only maintained road in the United States crosses into the polar region.

A hidden slot canyon in the southern Nevada desert makes an unexpected oasis and scenic hike.

This massive geographical sculpture is so subtle, it's possible to pass by it without noticing.

The drama of nature in full effect in this Nevada State Park.

Preserving the remains of Native American cultures which otherwise would have been submerged behind Hoover Dam.

Eulogizing an unknown man's unusual demise.

Ado Awaye Mountain and the unique lake that sits near its peak are shrouded in ancient legends.

One of the best-preserved medieval streets in Europe.

Colin Stokes "got a bit carried away" and built a castle that looks like something out of Tolkien.

A unique botanical garden housed in three giant geodesic domes.

These unique toilets feature transparent glass covered in PDLC film.

Order cookies baked by cloistered nuns in a 400-year-old monastery.

How did a French journalist’s grave become the sexiest statue in the cemetery?

This restored Portuguese cafe may well be the most beautiful place in the world to grab a Big Mac.

A commemorative plaque hides a door that leads down to the New York Public Library's underground book bunker.

The sinister ruins of one of the worst dam failures of the 20th century lie in this astonishing alpine setting.

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

The cliff and rock formations are made out of Sioux Quartzite.

A legend says that if this elaborately decorated glass breaks, the good fortune of its owner's household will also disappear.

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

A classically inspired temple in Redwood City.

A burnt orange monolithic dome structure perched on a hillside near Interstate 280.

Across Ring Mountain is a vast collection of Native American petroglyphs unique to the region.