An absolutely beautiful 200-foot stained glass installation traces the evolution of knowledge.

A stark reminder of the huge nuclear weapons plant that once stood on the site and its effect on the surrounding area.

The 25th President's marble casket can be visited in this classical Ohio tomb.

Featuring one of the most complete and original collections of Presidential memorabilia, this is the site of the last front porch presidential campaigns.

Giant busts of 42 U.S. presidents are sitting in a field in Virginia.

This Old Testament garden features 100 plants from biblical times.

The land is home to swimming ponies and a legendary 18th-century treasure.

A unique solar-powered pottery studio and gallery in the desert.

A modern day curiosity cabinet.

This secluded aqua waterfall in the Grand Canyon is the perfect swimming hole, and the Havasupai tribe's fiercely protected natural wonder.

Hidden inside this Arizona fast food franchise is an in-depth exhibit on the famed WWII counterintelligence program.

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

This 16-foot, intricately detailed model of the Gearing-class destroyer has been called the most detailed model ship ever built.

This giant urban staircase was built to keep the city's brave fighting men from getting waylaid in the red light district.

This family mausoleum is steeped in symbolism and looks more like a fantasy location than a grave.

The most photographed house in Maine looks good enough to eat.

Inspired by a foil-wrapped potato, (seriously) the Markel Building has been deemed one of the 10 ugliest buildings in the world.

Ecuador's largest Incan ruins show evidence of sophisticated irrigation and diplomacy among the ancient builders.

Don't blink or you'll miss it.

Dedicated to the art and science of glass in equal measure, this space is as much laboratory as museum.

The wooden octagon in which Huckleberry Finn and A Connecticut Yankee were born can still be visited in upstate New York.

Cat art as far as the eye can see.

A more chill but no less fascinating version of the famous ancient archeological site.

11,500 year old little girl found buried in an ancient fire pit.