A striking memorial to the 21 lives lost in an explosion at the Washington Arsenal

A historic arena where the Beatles played their first concert in the U.S.

This museum explores the grim reality of life in the earliest British colonies in America.

The intricate stonework of Machu Picchu serves as a testament to Incan engineers.

Mexican food and folk art.

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

Two massive rock outcroppings on the Oregon coastline.

A delightfully quirky blend of oddities spread throughout an old 1920s bank.

This grove of ghostly cedars was killed in 1700 by an enormous tsunami, felt from the United States to Japan.

This large Sitka spruce that appears to be floating in mid-air, has defied logic for years.

Shoreline strewn with the remains of ghostly fallen trees.

A tiny plaque hidden miles into the Washington wilderness is all that remains to honor a shipwreck that left 18 people dead.

A surreal landscape where fanged rocks rise from the ground and the ocean feels like a great mystery.

Neither Spanish settlers nor anyone since has been able to tell who built these strange California rock walls.

A phenomenal assembly of pueblos in New Mexico is the most complete example of ancient ruins north of the border.

This prehistoric sinkhole lured exclusively male mammoths to their death, much to the delight of science.

Ethiopian standing stones featuring remarkably preserved carvings of swords and people.

The largest prehistoric ruins south of the Sahara, once a powerful center of international trade.

The largest burial mound in the United States holds the remains of prehistoric West Virginians.

These mysterious ancient stone spheres were created by a civilization lost to time and are now mostly lawn ornaments.

The remnants of an early American attempt at missile defense.

World's first "penitentiary," meant to be humane, drove men insane.

This German version of Universal Studios holds a vault of treasures from the NeverEnding Story.

The site of the famous Nazi book burning campaign of 1933 remembers its "Night of Shame".