European castle ruins in an American state park are actually the product of death and grief.

Fresh wooden posts have been added to ancient holes to recreate a primitive henge clock.

Once one of the world's great cities, Cahokia was a place of religious worship, trade and mass human sacrifice before being mysteriously abandoned.

Man-made geyser that rises to the exact height of the Gateway Arch.

After Christopher Columbus died, his son built a fancy house to rule from.

The first hospital in the New World.

A late-night restaurant empire was launched from this humble storefront.

Spanish architects used seized Muslim gravestones to rebuild parts of the fortress.

Paranormal experiences in this hotel's room 217 led Stephen King to write "The Shining."

Overlooking the Colorado Convention Center is this giant sculpture made from thousands of triangles.

Thanks to a quirk of elevation this gift shop produces magic doughnuts that are found nowhere else on Earth.

Strange red rock formations that have been attributed to a higher power for hundreds of years.

Dramatic river bend surrounds a natural red-rocked pedestal.

The location where the iconic movie character declared it was time to go home.

One of the world’s largest collections of petroglyphs records 2,000 years of human activity.

A little sculpture with a large wardrobe.

The tallest The Church of Jesus Christ of Latter-day Saints temple in the world soars above the Beltway.

Remnants of a storybook amusement park hidden behind a strip mall.

A local farm's collection of unusual structures from a now defunct storybook amusement park.

A museum dedicated to exhibiting remarkable outsider art.

This daunting 1st century fortress was purportedly the site of one of the most dramatic revolts of the Jewish-Roman wars.

Mountain where Jesus was first tempted by the Devil.

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

This cemetery features modernist statues as strange as its name.