This exhibit allows visitors to wander through the interior of a replica Ice Age glacial cave.

The last of Philadelphia's wood-paved streets is now a landmark of terrible engineering.

A private residence adorned with a gorgeous mural dedicated to the buzzing insect.

This extraordinary Depression-era expenditure was modeled after a postcard of a Mediterranean hotel.

Penn State's giant bug collection.

Alexander Hamilton’s creation caused quite a bit of controversy.

A quirky collection of outsider art made from automobile parts.

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

Pennsylvania's highest point is spotted with boulders which were pushed to the surface by nothing but cold.

This Philly landmark has a giant butterfly pavilion, three floors of insect displays, and withstood a $40,000 heist.

Locals call this magical moss-covered walkway the "Emerald Path."

There aren't too many operational funiculars around, but Pittsburgh has two!

Enjoy a slice while browsing the world's largest collection of pizza memorabilia.

This lush forest valley was once mined for lumber to the extent that it was once nicknamed "The Pennsylvania Desert."

This park contains a number of standing stones meant to heal and inspire.

This hidden gem of a garden has one of the only surviving Victorian ferneries in America.

A failed piece of Orientalism has become the proud symbol of a community.

This Old Testament garden features 100 plants from biblical times.

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

The house that Frank Lloyd Wright "(shook) out of his sleeve at will" at the age of 86.

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.

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

This permanent exhibition celebrates the finest of our heartless automatons both real and fictional.

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