A daily replay of the experiment that proved the rotation of the Earth.

One man's ambition created this psychedelic log home.

Standing in a state of "arrested decay," this ghost town allows for a detailed peek into Gold Rush life in an unusually harsh climate.

This remote fort on the Yukon River is a vestige of the wild Alaska gold rush.

The walkable ruins of an 19th century hotel, destroyed in a horse cremation gone wrong.

The top of society once luxuriated in this world-class hotel, which continues to impress, even in ruin.

The now-overgrown beach resort was once frequented by Yugoslav military elite.

An abandoned Art Deco hotel nestled on the side of a wooded mountain.

The world's largest sticker ball weighs in at a mighty 231 pounds.

The biggest and deepest Cold War bunker open to the public can be found in southeast England.

One of the most horrible legacies of the Cold War is a site where the Soviet Union tested nuclear bombs on civilians.

These former Cold War launch sites have been preserved for tourists to see where the button might have been pushed.

Part of a secret 1970s nuclear defense program is now open to the public.

The scant remains of an expansive indigenous civilization can be seen at this Arkansas state park.

This spectacular track has run continuously since 1882.

This expansive bridge in the Canadian wilderness was originally just built for friends.

The latest in a series of long glass bridges suspended at terrifying heights.

This terrifying glass bridge on the side of a mountain cracks as you step on it.

These decaying bridges 1,000 feet high are a reminder of the skill it took to cross the Colorado Rockies by rail.

Ten 25-foot-tall, beehive-shaped kilns, abandoned in Death Valley.

This once bustling boomtown hotel is now the hottest spot in Nevada for ghost hunters.

A logging-themed roadside restaurant surrounded by museum-quality machinery and artifacts from the industry's heyday.

This small, rural pioneer cemetery is full of interesting grave markers.

Mountain known by the Tillamook Tribe as "the place of the supreme deity."