Stockholm's narrowest alley is barely over two feet wide.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

This replica of the Greek structure is in the heart of Nashville.

An urban laboratory.

See massive fossils that are over 200 million years old in northeastern Arizona.

Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.

When ecosystems collide in the arid Southwest.

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

One of the oldest Black communities in western North Carolina and one of the largest Black Mennonite congregations in the country.

A water pumping station disguised as a residential home to assuage concerned neighbors now tricks most passersby.

Rare videos and memorabilia await visitors inside this unique store.

This too-low North Carolina railroad trestle is still a notorious big rig executioner.

Conjoined twins Daisy and Violet Hilton were stars of the vaudeville circuit.

Practice your Dirty Dancing lifts in the manmade lake where Johnny Castle himself did.

A mailbox that saved a nature reserve.

Who needs fancy modern water slides when this giant North Carolina rock works just as well?

In a pedestrian tunnel on North Carolina State’s campus resides an expressive and artistic free-for-all.

This woodland architectural installation acts as a camera obscura for the heavens.

A giant cement churn carries the legacy of American resilience, unity, and greed.

Classy up your Big Mac with bow-tied servers and chandeliers at the world's fanciest McDonald's.

Every week, a festive public jam session breaks out in downtown Asheville.

A wedding chapel, vintage clothing shop, and bar all under one roof.

This museum housed in a former brothel explores the past and present of sex work in Amsterdam.