A windswept necropolis carved into the rocks overlooks the "most Portuguese town in Portugal."

This unusually shaped mountaintop tower looks like a UFO floating over the city.

A blacklight mini-golf fever dream pays tribute to the iconic rock band.

This maze-like slot canyon is a unique gem within an already fascinating geological area.

No one's quite sure why there's a metal megaphone bolted on two rocks in the middle of the Mojave Desert.

The first custom-designed building to showcase the works of Dale Chihuly is a wonderland of glass and light.

An enormous alien invades Woking, England, as an homage to the H.G. Wells classic 'The War of the Worlds.'

This futuristically sylvan church is a glass-enclosed marvel of modern architecture.

Built by the patriotic residents of Boonsboro in a single day.

This neighborhood of futuristic ball houses looks like an alien settlement in a science fiction film.

A mysterious monument where a woman who records say never existed was burnt alive for being a witch.

A Frankenstein blend of science and art allows one tree to produce 40 different types of stone fruit.

This dramatic rail curve was once the target of a failed Nazi attack.

An exhibit of items from the mental institution where Mary Todd Lincoln lived after her son conspired to have her committed.

Hidden beneath the waters of Lake Michigan rests a perfectly intact ship from the early 1900s.

An ancient Scottish rock formation said to be the gravesite of a giant remains ensconced in legend and intrigue.

This dramatic landscape hidden on the Isle of Skye looks as though you've stepped into the magical realm.

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

A medieval castle in the middle of rural Texas.

Nine centuries-old fortresses guard the walls of this medieval Romanian city.

An acoustic anomaly with a mysterious cause.

Life-sized painted illusions let pedestrians blend in with the street art.

The remains of an abandoned dinosaur theme park litter the woods just off the highway.

In this African village, the walls of the chief's compound are painted with beautiful traditional designs.