Tour the dark and beloved poet's former cobwebbed basement, which may have inspired "The Black Cat."

The remains of a community that was forced to move for a dam that never materialized still rot in this Pennsylvania park.

This Boy Scout retreat acted as "Friday the 13th"'s original Camp Crystal Lake.

This splendid Versailles-inspired mansion has the largest French-style formal gardens in North America.

A blend of art, antiquities, and Americana fill this museum, surrounded by whimsical, enchanting gardens.

These lush botanical gardens employ the most purrfect pest control force.

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.

The famous bell was secreted away and hidden in a church in Allentown during the British occupation of Philadelphia.

One of the world's largest model railroads is a mind-boggling achievement.

This Delaware River bridge is emblazoned with a catty slogan from a more prosperous time.

A layered tribute to the work of mosaicist Isaiah Zagar.

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

This elaborate towering structure was once famed for its revolutionary height.

A tour de force of a fountain, memorializing a man who loved fountains more than anything else.

The origin of this mechanical boy was a mystery until he revealed his maker by writing it in perfect cursive.

A daily replay of the experiment that proved the rotation of the Earth.

Yo, Adrian!

World's first "penitentiary," meant to be humane, drove men insane.

This Philly cemetery is the eternal home of many famous area residents, including Rocky Balboa's wife.

This historic old movie house was the scene of one of the Blob's most iconic attacks.

A pride of the state, this working museum crafts pottery mosaics in the style of Pennsylvania's earliest European settlers.

Eccentric concrete mansion and museum designed and built by hand from the inside out.