This extraordinary geological oddity resembles human-made pavement.

This deceptively beautiful island was once home to a German concentration camp and known as "Death Island."

A lush indoor jungle fills this bustling Madrid transportation hub.

These memorials built by an eccentric bachelor on the side of Interstate 5 cause both wonder and traffic accidents.

This decommissioned DC-3 now forever points into the oncoming wind.

A spoke-tacular artwork constructed from recycled bicycle rims.

Ten shipwreck-shaped chalets lie along the sand dunes on Namibia’s Skeleton Coast.

An oddly poignant roadside attraction celebrating American folklore.

A museum dedicated to exhibiting remarkable outsider art.

A peaceful international sculpture garden in upstate New York.

These enduring murals depicting a distinctly Marxist tribute to capitalism could not even be defeated by McCarthyism.

This Detroit ruin was once a gothic bastion of its community, but now it stands as a haunting ruin.

Berry Gordy Jr.'s old home was the original headquarters of Motown Record Corporation.

The roadway bend where highway painters practice their craft looks like expressionist art.

Centuries-old bridges grown from tangled roots.

One of the longest natural sand beaches in the world.

This former sugarcane transport tunnel is now a portal to a lovely beach.

The highest peak in Puerto Rico is home to a rare fern that can only be found on six trees at its summit.

This limestone cave offers an incredible view of the Río Grande de Arecibo valley.

This niche museum devoted to ancient religious artifacts is shaped like the very thing it displays.

These red and black houses were awarded to the firefighters who saved their city from an enormous blaze.

A Swedish farm is the world's only producer of the rare, creamy delicacy that is moose cheese.

Megachurch turned Catholic church comprised of 10,000 glass panes.

This enormous World War II relic is one of the largest wooden structures in the world.