An enigmatic natural rock formation with a manmade passage cut through the center.

A strange house built only at night, with rumored mystic inspiration.

The middle finger of modernity.

Hidden within a Netherlands crater is a stone bed that lets those who lie in it see the sky as a curved surface.

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

A sculpture of 18 beautiful clay mandalas on display at Warm Mineral Springs in Florida sends a message of world peace.

This ancient sinkhole-turned-healing-pool is a treasure trove of archeological discoveries and may even be the Fountain of Youth.

The deepest lake in the United States, and once the site of epic destruction that lives on in legends.

Strange rock formations tower above the river that snakes through this enchanting Icelandic canyon.

Take a step into the workshop where Edison and his employees revolutionized the world.

A world-class collection of mechanical musical instruments and automata.

A giant light 13 feet high shines near Thomas Edison's old Menlo Park lab.

This tiny New Jersey village has lived many lives but seems determined to remain a ghost town.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

The ghostly remains of what was once the world's richest copper mine.

This symbolic piece of New Orleans architecture is also home to a few ghastly stories.

The world's oldest hologram gallery and the labyrinthine laser laboratory of a holography pioneer.

A 19th century artistocrat's mansion, turned into a library, hidden in a modern library.

Crawl through the hole in the middle of this stone to break off a bad relationship or initiate a good one.

Walking by this fence is like strolling along a portal to various fictional worlds.

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

This churchyard arbor is surrounded by hundreds of gravestones placed there by author Thomas Hardy.

A huge musical instrument played by the ocean.

This meticulously extracted nervous system allegedly came from a 19th-century custodian who donated her body to science.