This titanic java kettle is one of the many kitschy landmarks located along America's OTHER famous highway.

The pop art icon's gravesite is broadcast 24 hours a day on his museum's website.

A retrofuturistic art installation in the Pittsburgh Airport.

Nothing says indulgence like a 1,500-pound chocolate castle.

The last remnants of Fort Pitt also hold the distinction of being the oldest structure west of the Allegheny Mountains.

One of the steepest streets in the United States makes an intriguing challenge for cyclists.

This plaque marks a place where one of Hollywood’s most famous dancers got his start.

Sections of the iconic limestone columns have been left uncleaned as a reminder of the city's polluted past.

A preserved 18th century homestead in Western Pennsylvania marks the spot where the Whiskey Rebellion began.

The Pennsylvania shopping center was once the setting for the 1978 film, "Dawn of the Dead."

This dramatic rail curve was once the target of a failed Nazi attack.

A local prank turned town icon.

An indoor miniature village and labor of love for Laurence Geiringer, a model railroad enthusiast.

An abandoned Depression-era zoo hidden just off the highway.

This strangely amalgamated museum explores the history of the Timex clock company as well as archaeology.

This historic park site contains the last remnants of a once bustling canal system.

The abandoned husk of a mental institution that failed to save a Jazz Age icon still sits nearly unchanged.

A 19th century hat factory still stands as a crumbling ruin in upstate New York.

This abandoned factory on the Hudson River once churned out a million bricks a week.

This sprawling woodland estate was the brainchild of iconic American industrial designer Russel Wright.

This recently restored timepiece has stood all around Kansas City.

Community bookshelf of 25-foot-tall book spines.

In the middle of a suburban Denver neighborhood is a cave that once provided solace for a prominent Ute chief and his family.

This iconic science fiction house still looks like something from the future.