This palatial botanical garden is home to one of the largest pipe organs ever installed in a private residence, and a piece of Wood's cycad.

In which a local geological marvel becomes a quaint roadside attraction.

The universally beloved children's television figure is interred on a high hilltop in one of western Pennsylvania's oldest cemeteries.

This little museum in the town where zombies were born celebrates the living dead.

These tourist trap caverns are said to be the former home of a legendary Pennsylvania Hermit.

These beautiful ruins deep in the Pennsylvania woods are thought to have been a ski lodge or a speakeasy, but no one really knows.

A stone arch leads to a cavernous 1930s spring house tucked away in the Pennsylvania woods.

Sail through this subterranean show cave that is home to a legend that would go on to name nearly everything around it.

House of vintage taxidermy and Steampunk sculptures in a quiet Pittsburgh neighborhood.

Frank Lloyd Wright's most iconic home dangles over a Pennsylvania waterfall.

Hellam Township is reputed to feature seven remote gates, which when passed through in the right order, open an entrance to hell.

Once used to screen films for theater owners to rent, this historic building is now a start up hub.

An 18th-century Catholic church converted into an eccentric temple of music and bacchanalia.

The residents of the Neighborhood of Make-Believe live without much fanfare within the Pittsburgh Children's Museum.

This Old Testament garden features 100 plants from biblical times.

Soaring over the Niagara Whirlpool since 1916.

This stone incorrectly marks the 35th parallel, causing some territorial kerfuffles.

The alley connecting two of country music’s most historic venues has a rich history of its own.

This defunct, fortress-like prison has been the setting for several movies.

Hiding behind a grocery store is a spectacular cavern carved as part of an old limestone quarry.

This large cave is a summer home to thousands of bats and has a rich history dating back to prehistoric times.

Elvis's own personal tropical hideaway.

The first full-scale tunnel built in America is short but scenic.

This funicular railway rumbles along for a mile up the nearly vertical face of Chattanooga’s Lookout Mountain.