A stone in Wolin, Poland, marks the possible location of a legendary Viking fortress.

Countless stories attempt to explain Poland's mysterious J-shaped trees.

These mysterious Viking chess pieces spent centuries hidden on a remote Scottish island.

The oldest surviving mosque in the UAE has mysterious origins and unusual architecture.

Natives of this mud-brick desert village use an ancient irrigation system to grow sweet, seedless grapes.

The tech giant built three enormous glass orbs in Seattle so employees could work inside a rainforest greenhouse.

The oddly shaped, steam-spewing building is now an art studio and gallery.

Where the four original members of the Ramones hung out and revolutionized punk rock.

These upturned herring boats make nifty storage sheds for fishing goods.

One of two Irish-style round towers in Scotland, this structure has mysterious origins.

This opulent 16th-century Maharaja’s palace is a unique mix of Hindu and Muslim designs.

A trio of giant megalithic stones in the middle of a golf course.

Perhaps the most scandalous statue of America's first president.

A volcanic old faithful, Stromboli has been erupting continuously for the last 2000 years.

According to the local folklore, the myriad colors of this lake are the result of a lovelorn wizard's blunder.

This rickety old shed hides a trove of secondhand literary treasures.

One of the most well-preserved temples of ancient Egypt.

An ode to the friendship between four Pacific Rim countries.

A beautiful and abandoned New York subway station from 1904, complete with chandelier.

A fiery crater has been burning in the Karakum Desert since 1971.

This ancient structure was built by a mysterious civilization that was largely destroyed by a volcanic eruption.

The flower-shaped temple in Virginia aims to transcend the boundaries of the world’s religions.

The names Lúthien and Beren can be found inscribed on the shared grave of the famous writer and his beloved wife and muse.

The unusual lighthouse looms over waves of prairies with no sea in sight.