A winding path built in secret on the edge of the continent.

A collection of memorabilia from the Beat era in the back of a San Francisco bookstore.

One part local history, 99 parts gruesome haunted house.

A sign at the end of the Santa Monica Pier marks the traditional end of the legendary American highway.

Hollywood's most famous landmark, the "temporary" sign that has stood for decades longer than intended.

Its eclectic exhibits range from the world’s first motorcycle to Luke Skywalker’s Land Speeder.

Small and slightly hidden, the American Writers Museum is preserving the legacy of America's finest authors.

A military museum and library dedicated to the citizen soldier.

The famous author's birthplace is preserved in a town that he once described as narrow-minded.

To find the "unicorns of the deep" you've got to go downstairs.

Once called the "Polish Gold Coast" it is an icon of the neighborhood that bears its same name.

The twin towers in this Chicago fountain use 50 foot tall video screens to spit on people.

Internationally known record store and purveyor of "dusties."

A Bibliophile's Dream.

Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.

The fastest mail service in the west is tracked and memorialized along this 1,400 mile trail.

What was once a presidential estate is now an exotic menagerie and home to the Budweiser Clydesdales.

Less a museum than a bizarre fantasy world created by artists and engineers.

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

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

Once a lonely sentinel on the edge of the Great Plains, this rebuilt trading fort offers a glimpse of life on the Santa Fe Trail.

When ecosystems collide in the arid Southwest.

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

The arch that celebrated the completion of the Lincoln and Victory highways.