A decaying building marks the site associated with Emmett Till's brutal 1955 murder, which helped sparking the civil rights movement.

A Muppet museum in small-town Mississippi honors the roots of Jim Henson's most beloved creation.

Concrete crosses scattered across the Arizona scrubland which were used to align spy satellites.

Frank Lloyd Wright's most iconic home dangles over a Pennsylvania waterfall.

A toxic ghost town sitting atop a massive coal fire.

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

Once connected to the outside world by a single train track, this ghost town is looked after by the National Park Service.

A long-vacant Scottish Rite temple in Hollywood has been converted into an art museum filled with Masonic relics.

The "world's biggest dinosaur" once housed a creationist museum in its abdomen.

Under the right circumstances, this waterfall in Yosemite briefly turns a luminescent fiery orange.

A multimedia experience that chronicles the atrocities of racism.

The unusual medical inventions of the man who gave the world Corn Flakes.

The hotel where Martin Luther King Jr. was shot is now a museum dedicated to his work.

The trials and tribulations of marking Poe's grave.

This water tower slanted at an uncomfortable angle off the old Route 66 was an ingenious marketing ploy.

A sculpture made of 10 Cadillacs as a monument to the "Golden Age" of the American automobile.

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

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

If drivers cross the rumble strip on this stretch of Route 66 at just the right speed it plays "America the Beautiful."

A clear blue swimming hole with hidden caves, still unexplored.

Niagara Falls holds a special place in Nikola Tesla's history, so they put a statue on it.

One of many reminders of Tesla's scientific contributions overlooks the falls which inspired him.

Town not known for anything except its strange name.

The headquarters of a secretive order is also a beautifully-designed park.