This bridge over D.C.'s Rock Creek Park is sometimes called the "Buffalo Bridge" because of its four buffalo sculptures, which were cast from a single piece of bronze.

Behind an abandoned storefront is an example of pioneering 1930s gas station architecture.

A diminutive memorial marks the site of a successful assassination by a right-wing death squad in America's capital.

A public art jibe at one of the United States’ oldest and longest-serving senators.

The only Leonardo Da Vinci painting in the Western Hemisphere.

One of the three perfect vellum copies of this historic book known to exist is on display in a specially-designed case.

This Arkansas town is known for its gangster history, its healing waters, and now its brews.

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

A beautiful South Korean gate and garden in Little Rock honors American Taekwondo.

Yup, that's where the name came from.

This Little Rock legend has survived decades of rowdy crowds, three fires, and a zombie wedding.

Two gushing waterfalls of hot spring water within a block of each other.

This historic hotel on Bathhouse Row in Hot Springs National Park has a storied history of gangsters and baseball greats.

Light bulbs, scrap wood, and tinfoil comprise this homemade throne of the gods.

A curious fountain that has no water and includes Satan, a crab, and 9 giraffes.

Rodin's famous depiction of Dante's 'Inferno', amidst a sculpture garden of many of his other works.

A statue commemorate Tommie Smith and John Carlos's brave protest at the 1968 Olympics, a watershed moment for civil rights.

It is locally loved and ridiculed for literally looking like poop.

It took years to decode its mysterious messages.

The century-old bell and clock tower at UC Berkeley is the third-tallest in the world, and has fossils.

Today's aerospace industry can be traced back to one man and his gliders.

Approximately 250,000 people left homeless by the great earthquake and fires found shelter in Golden Gate Park.

Once the largest windmill outside of Holland, with enormous 114 foot sails.

The key to turning shifting dunes into the green oasis of Golden Gate Park.