Outsider art meets paleontology at this roadside reptile repository.

The oldest farmer's market in America is so ancient it was approved by the King of England.

This giant rock arrived at this quiet park thousands of years ago on the back of a massive glacier.

The real-life site of Ichabod Crane's infamous gourd attack.

Oldest existing church in New York and the inspiration for Washington Irving's "The Legend of Sleepy Hollow."

This isn't your average roadway—it's actually a National Park and a transportation pioneer.

A little marble compass above George Washington's (empty) tomb in the Capitol marks where D.C.'s four quadrants intersect.

Rumor has it the uncarved lump behind the three famous suffragists is reserved for the first woman president.

Corn-inthian columns with a uniquely American take on neoclassical architecture.

The "lovely red Vega" of the legendary record-settling pilot.

The actual model from the original "Star Trek" series is now on display at the National Air and Space Museum.

Washington's iconic carousel has a nice piece of Civil Rights history.

A celebrity from the late Cretaceous period.

Those with a sharp eye can find the hidden image of a German Shepherd on the memorial's Mural Wall.

The house where John Wilkes Booth conspired with his co-conspirators.

Wedged between two sets of row houses is an awkwardly located family graveyard.

The trials and tribulations of marking Poe's grave.

An antique Beechcraft airplane serves as a giant windsock for people driving through the blustery open country of eastern Wyoming.

The remote outlaw hideout of Jesse James, Butch Cassidy, and the Sundance Kid.

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.

A beautiful geyser under environmental threat.

The first declared National Monument in the United States.

The notorious Wild West outlaw was raised in this unassuming abode.