One man has spent decades faithfully constructing this unique brick and cinderblock castle.

One man’s religious convictions led him to build this stone castle meant to withstand an apocalypse.

This improbable contraption was passed down through five generations of industrious Tennesseans.

This hotel was used during the Manhattan Project to house official visitors.

Once a gas station, this flightless airplane beside the Old Dixie Highway now houses a barbershop.

This stone memorial pays tribute to a massive shipwreck which was sadly overshadowed by the death of John Wilkes Booth.

Knoxville’s architectural icon was the symbol of the 1982 World’s Fair, even catching the googly eye of Bart Simpson.

On a side street near the interstate is the building where the famous anarchist once owned an ice cream parlor.

This little-known rival to the Library of Congress houses one of the largest collections of pre-1876 American books, newspapers, and manuscripts.

The last remnants of Fort Pitt also hold the distinction of being the oldest structure west of the Allegheny Mountains.

It may appear to be a fancy junk yard, but each item has a story to tell and a lesson to impart.

A take-out restaurant that only serves cuisine from countries with which the United States is in conflict.

Mutant vegetables, transgenic mosquitos, and atomic rodents span the walls of this one-of-a-kind museum.

As the glaciers retreated out of northern Wisconsin, this unique natural wonder was crafted.

Mural made of 100,000 pieces of hand blown glass, and until recently, the largest glass mural in the US.

The third tallest lighthouse in America once guided author Stephen Crane to safety.

Hidden in the plaza next to a pizza shop is an amazing little oddities shop.

A headstone tells the sad story of a lost little boy and his pet dog.

A real flying saucer, contracted by the U.S. Air Force.

These eerie outliers of the lightning bug family glow a mysterious blue color.

The only Bahá'í house of worship in North America and one of only a handful worldwide.

A science teacher's dream.

Exceptional Nepalese food can be found in a Texas gas station.

An eatery within the Minneapolis American Indian Center writes colonial ingredients out of the story of Native American cuisine.