One of just a few cities in the world to base their center of government on an island. Others: Paris and Osaka.

A memorial to the most decisive Native American victory of the Plains Indian War.

A monument to the center of the North American continent may be off by a few miles.

The site of the first daylight, peacetime bank robbery by the James gang.

This ancient settlement contains some of the largest earthen mounds in North America.

Meet manatees face-to-face at this zoo for native species.

The 10th-tallest pyramid in the world, this former sports arena is now home to a massive Bass Pro Shops store.

The souvenir got the company’s founder out of a pretty pickle at the World’s Fair.

This extravagant Art Nouveau rest stop features a million-dollar view of the Columbia River.

A French chateau, failed utopian community, odd museum, and Stonehenge replica in rural Washington State.

During World War II, over 13,000 people of Japanese ancestry were forcibly removed from their homes and incarcerated in this camp in the Idaho desert.

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

One of the first intercontinental ballistic missile sites in the United States.

The hallowed ground of one of the worst atrocities in United States history.

The site where Joseph Smith, founder of the Latter Day Saint movement, was killed by a mob.

Symbolic attempt to overcome the issues of life.

The only brothel on the National Register of Historic Places.

The final resting place of the legendary outlaw.

This grassy field marks the site of a surprising religious conflict.

Contains a wealth of information about the first exploration and later use of the Green and Colorado Rivers.

This now-abandoned part of the original transcontinental railroad route provides a surreal driving and historical experience.

Few things look more out of place than the electric blue ponds in the reddish-brown desert of Utah.

One of the world’s largest collections of petroglyphs records 2,000 years of human activity.

A house carved into a rock in the 1940s.