Herbert Hoover's "Brown House" rural presidential retreat was a PR disaster amid the start of the Great Depression.

An enormous warehouse filled with parade floats collected from over 50 years of patriotic celebrations.

All that remains of a gigantic earth-moving machine.

You can walk through the first Boeing Air Force One, which famously carried JFK's casket from Dallas back to D.C.

The farm where one of America's greatest leaders was raised is now a well-appointed landmark.

Roaming bison and a spectacular view at the highest point in Nebraska.

The high point on the 16th president's eponymous roadway is marked by a massive version of his head.

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

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

An architect's childhood fantasy treehouse made real.

One man's ambition created this psychedelic log home.

Mysterious rocks that ring musically when struck.

The twin towers in this Chicago fountain use 50 foot tall video screens to spit on people.

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

This historic national park is covered in the stunning ruins of red rock pueblos.

Ancient pueblos built into the base of a natural canyon wall.

This Arizona observatory is famous for investigations into Martian life, and as the place humans first spotted Pluto.

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

"Only the devil could play golf here."

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

An abandoned Jazz Age dream home and con man's hideout in Death Valley.

This rugged area of red rocks and arches is often considered one of the most beautiful places on Earth.

The hike through a narrow river flanked by the 2,000-foot-tall walls of Zion Canyon is one of the best in the world.

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."