The only U.S. Senator to die on the field of battle is buried in San Francisco but memorialized at Balls Bluff Regional Park.

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

Once one of the world's great cities, Cahokia was a place of religious worship, trade and mass human sacrifice before being mysteriously abandoned.

Massive still life just off the highway in Kansas.

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

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

These elusive, isolated rodents evolved into a distinct, locally iconic subspecies.

This Native American settlement dates back to the Pueblo II period.

A motel dedicated to Southwestern nostalgia.

See massive fossils that are over 200 million years old in northeastern Arizona.

Berkeley Hot Springs presents to you "the only outdoor monument to presidential bathing."

Extraordinary objects lurk in this quintessential regional museum.

Time travel with sweets across history at this research-based candy store.

This striking Victorian Home with its 113-foot turret is best known as the site where abolitionist John Brown was executed in 1859.

A monument marks the location of the first successful steamboat demonstration.

Built in the 1850s, this church was of the first five churches constructed in Harper's Ferry.

This shale formation along the Appalachian Trail once inspired the third president of the United States.

The last holdout of a pre-Civil War rebel who took the matter of slavery into his own hands.

A hidden piece of Altoona's railroad history in a long-forgotten abandoned town.

One of the oldest family businesses in Reykjavík serves lamb-based hot dogs.

One of the most accessible undersea plane wrecks in the world.

One of many reminders of Tesla's scientific contributions overlooks the falls which inspired him.

The final resting place for the famed creator and narrator of "The Twilight Zone."

The little-known final resting place of one of America's greatest writers.