A monument to a one-legged kidnapper, horse thief, and charlatan asks visitors to throw rocks in a pile.

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

A mysterious echo seems to defy the laws of acoustics.

A "gravitational anomaly" located in the redwood forests just outside of Santa Cruz, California.

This historic Melbourne bullet factory is fully encased in a massive glass and steel cone.

This large round boulder is said to emit spiritual power, but it may just be magnets.

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

The largest stone moai on Rapa Nui.

The largest earthwork effigy in the world.

Native Americans built this circle of stones, which was used to predict astronomical events.

The body of an unidentified woman, visible through a glass coffin, was discovered by accident.

Eight rare Corvettes are swallowed up by a sinkhole in Kentucky's National Corvette Museum.

Every last book in this bookstore is signed by the author.

The secret city built by the Manhattan Project.

One person's lost luggage is another person's treasure.

All you ever needed or wanted to know about America's favorite whiskey, but not a drop to drink.

A giant pair of thick black glasses mark the tragic demise of a trio of rock and roll legends.

A place of great reverence for Trekkies everywhere, a hero's future birthplace.

This fast-food outlet is the only space and UFO-themed McDonalds in the world.

Twice a year, visitors can tour the desolate site that birthed the Atomic Age.

This head-spinningly bizarre Depression-era art cave is wall-to-wall quartz and Jesus.

A 35-foot-tall fork stuck in the ground outside an office building in Missouri.

The world's largest talking cow would like to tell you about the benefits of 100% Wisconsin dairy products, if only she still could.

The Arctic Archipelago is home to world's largest third order island: an island in a lake on an island in a lake on an island.