A giant bronze coil of feces is both a tribute to doggie defecation and a reminder to pick it up.

The world's only teal arches exist in a city that cares more about its aesthetic than an Instagram influencer.

Located just behind a quiet residential neighborhood, this is ground zero for the Salem witchcraft hysteria of 1692.

The last remaining pre-dreadnought battleship in the world has been a museum for nearly a century.

These markers are used to document elevation changes around the famed dam.

These markers are used to determine the ground stability of the Strip.

The oldest attraction in Disneyland is a prehistoric stump that Walt may have bought for his wife.

The lead horse on a Disneyland merry-go-round that is older than the park itself.

This sign designates the road that leads to the infamous Area 51.

A glass display case holds the document that ended the Second World War—which one person signed on the wrong line.

The self-proclaimed gateway to the Extraterrestrial Highway.

Built for an exposition in 1915, these horticultural displays have stood the test of time.

Inspiration struck on this seat outside the Griffith Park merry-go-round.

This 22-acre botanical garden is home to the largest collection of rhododendrons in the world.

The longest spit in the United States ends at a lighthouse in the Strait of Juan de Fuca.

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

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

A museum dedicated to the alleged Roswell Incident.

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

Now housed in a museum, this giant pink elephant stood in downtown Seattle for more than 60 years.

You can walk through the first Boeing Air Force One, which famously carried JFK's casket from Dallas back to D.C.

One of the last surviving C-97s sits in a field in front of a Wisconsin inn.

Step back in time at this 1950s display home, built to showcase once cutting-edge electric amenities.

Railroad officials in the early 1900s sought to spare travelers the sight of Roman soldiers’ private parts.