American artist J. Alden Weir purchased this 60-acre estate for $10 and a painting.

Built by the patriotic residents of Boonsboro in a single day.

This unusually circular centenarian barn became a Route 66 icon.

The Old Mill shown in the opening credits of “Gone With the Wind” is actually fairly new, and was never a mill at all.

The only diamond mine in the world where you can keep what you find.

A recreated Stonehenge stands in a country field, complete with Easter Island moai heads standing as sentries.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

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

This rustic old building is said to be the most photographed barn in America.

One of the largest collections of wildlife art in the United States, built into the side of a cliff in rural Wyoming.

Home to the deepest rift anywhere on Earth.

This futuristically sylvan church is a glass-enclosed marvel of modern architecture.

The first declared National Monument in the United States.

The marker offers a rare chance to be in four U.S. states at once, though there's some controversy over its geographic accuracy.

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

Mausoleums, astronomy, and animatronic dinosaurs at this memorial to an assassinated American president.

This charming colonial alleyway is one of the oldest continuously used residential streets in the U.S.

An Old West film set seen in countless TV shows and movies is open for the public to explore.

This crumbling Death Valley mining complex was known for its use of giant, 20-mule team wagons.

An historic and oft-filmed spot for musclebound iron pumpers on the Pacific coast.

Millions of years of oxidation make a drive down this winding Death Valley road surprisingly colorful.

The site of one of history's most indelible and horrific tragedies.

Named after a bandit and the star of several Hollywood prehistoric landscapes, these sandstone formations are a historical part of the Los Angeles natural landscape.

The lowest point in North America is home to an undrinkable pool surrounded by fields of geometric salt flats.