An architect's childhood fantasy treehouse made real.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

Operational for less than a year, this mill produced more than 11,000 tons of chrome concentrate in its short lifespan.

Thanks to a loophole in property ownership, this alleyway has become a cacophonous street gallery.

Every president in history is immortalized in bronze in downtown Rapid City.

With over 340,000 artifacts and counting, there is something for everyone, often called the "Smithsonian of the West."

A scenic ravine with an astounding collection of rock art created by the Indigenous people of the Great Plains.

14th century Norse artifacts in Northwestern Minnesota could have proved a Viking landing before Columbus.

A stone face watches over the river.

An amazing collection of sculptures and art.

This retired stagecoach tavern is the oldest building in Cleveland.

This South Carolina water tower is an icon of the city of Walterboro, but it also once served as the county jail.

The only free-standing, vertical sundial in the US was keeping standard time before it was even invented.

This psychedelic tromp l'oeil seems to be beckoning drivers to crash into a wall.

Georgia's first brewery is also one of its oldest surviving buildings.

The tragic reality of a village riddled with rumors of haunts, chemical spills, and serial killers.

Indiana's shrine to the sport that has become a hallmark of their culture.

This delicate museum is devoted to the art and industry that once supported Cape Cod's oldest town.

This lakeside tower is the third attempt at getting a tourist destination to stick on the spot.

The ceiling of this vintage movie palace is covered in fantastic Art Deco murals.

A 19th century library favored by Edgar Allan Poe and H.P. Lovecraft, known by locals as "the Ath."

Rhode Island's tallest building bears a resemblance to the "Daily Planet" building and has been empty for more than five years.

The Burnside Fountain and its questionable interpretation.

A memorial for an outsider theorist who believed that the planet is actually hollow.