Now abandoned, the first public health hospital in the U.S. saw more than one million immigrants from around the world.

The rusting remains are visible sticking out of the waters of the Delaware Bay.

This Great Depression-era creation was once known as the strangest house in the world.

A bronze monument to the infamous radio broadcast in the real New Jersey town where the fictional Martians crash-landed.

A unique sculpture park that specializes in the huge and bizarre.

A museum dedicated to "science, history and the arts" little changed since 1915.

Once the future of underwater combat, this old sub is now open for visitors to muck around in.

The highest point in the state of New Hampshire, and while unlikely "the worst weather in the world," it sure seems that way to hikers.

Even Henry David Thoreau found this glacial pothole irresistible.

This massive geographical sculpture is so subtle, it's possible to pass by it without noticing.

The drama of nature in full effect in this Nevada State Park.

This incredible collection of vintage pinball machines can be played at 25 cents a pop.

The neon signs from Las Vegas' past find their final resting place at this unusual graveyard.

See the computer’s history revealed over the course of 20,000 years.

"Polynesia on the Plains."

This giant meditative chakra sits peacefully in the Flathead Valley of western Montana.

New fungal and bacterial species call this deadly lake home.

The first car-centric shopping plaza in the U.S. brought a little bit of Spain to downtown Kansas City.

An urban forest overtakes what was the greatest failure of utopic urban housing.

A museum celebrating the Victorian obsession with hair art.

A winged-helmed, sword-brandishing tribute to German Americans.

This 1960s kinetic artwork has been restored and is once again whirling away in downtown Minneapolis.

No one's quite sure where this quirky university tradition originated.

Downtown Minneapolis mixed art and function by turning some of their sewer covers into works of art.