The state's oldest continuously operating museum houses more than 5,000 Civil War artifacts.

This 45-story tall abandoned skyscraper is the third tallest building in New Orleans and Lousiana.

A Norwegian-born sculptor created these soaring guardian angels at the entrance to Hoover Dam.

Tatsuo Miyajima shares a philosophical appreciation for life with the latest human technologies.

These banned cigarette vending machines now sell little pieces of pocket-sized art.

A huge work of Burning Man-inspired outsider art on the grounds of a California winery.

Beneath the southern end of the Golden Gate Bridge is the “Gibraltar of the West Coast,” a fort built to protect the San Francisco Bay from naval attack.

At the base of the Golden Gate Bridge, a small sign basically begs for a high-five.

Staircase winds down the side of Telegraph Hill through gardens, wild parrots flying overhead.

This six-building complex is the home of the world's largest steer.

One of the largest private collections of fossils in the world.

Dedicated to the history of the 1,000 nuclear missiles that once covered the Great Plains.

One of America's first dinosaur parks gives a window into Depression-era paleontology.

The crumbling structure is a rare surviving relic of the area's bygone mining industry.

This vintage train once gave new meaning to “swimming upstream.”

A cemetery housing wild west legends in South Dakota.

Seth Bullock, the sheriff of Deadwood, built this town immediately after Teddy Roosevelt’s death in 1919.

Home of a French nobleman's short-lived attempt at raising cattle in the Badlands of North Dakota.

This beautiful ancient site is dotted with perforated sandstone pillars considered sacred by some Native American groups.

Yes, this monument is aware that it is about 20 miles away from the actual center of the United States.

The first declared National Monument in the United States.

Examine the impact of the horse on Great Plains culture through exhibits on ranching, rodeo, and the Native American way of life.

The highest point in South Dakota contains the ashes of Valentine McGillycuudy, the "Holy White Man."

Hidden behind Lincoln's head is a chamber containing enamel plates documenting American history, sealed in a teakwood box in a titanium vault.