One of the world's tallest Ferris wheels takes visitors high above Las Vegas in a spinning party room.

The bullet-riddled wall from the St. Valentine's Day Massacre, bloodstains enhanced for your viewing pleasure.

Air Force Academy Chapel made of 100 identical tetrahedrons works to inspire those of all religions.

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

These faux-cliff dwellings allow visitors to climb around on a replica archaeological site.

When ecosystems collide in the arid Southwest.

No telescopes, no power, no gift shop: The Observatory of Chichen Itza, one of the world's oldest observatories, takes astronomy back to basics.

Every equinox this Maya pyramid puts on a spooky ancient light show.

The world's longest known cave system.

Home of an evil witch famous within southern folklore.

Collection of vintage trailers double as hotel rooms.

Memorials and tributes scattered across the university grounds remember a famous national tragedy of the Nixon era.

A modernist landscape of water and sci-fi concrete.

Dyed by iron oxide over centuries, these sandstone rocks rise thousands of feet into the sky.

An enthusiastically interactive mining museum that won't let black lung ruin the fun.

Wall to wall taxidermy at Denver's oldest and most exotic steakhouse.

Curios, scientific antiques, oddities for sale.

Mural made of 100,000 pieces of hand blown glass, and until recently, the largest glass mural in the US.

The largest earthwork effigy in the world.

Where beautiful signs live on forever.

An abandoned munitions factory with a shot tower continues to wage war on the surrounding environment.

A castle built by an eccentric medieval enthusiast in rural Ohio.

The inventor of a number of hybrid corn species is immortalized with a field of giant corn.

Prison made famous by The Shawshank Redemption has been out of commission since 1990.