This hospital fell into ruins after failing to act as the advocate for the mentally ill it was designed to be.

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.

Current docking place of the SS United States, the fastest transatlantic ocean liner.

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

Local lore claims this park is named after a young woman who jumped off a cliff.

Once the world's largest reinforced concrete structure, this abandoned bridge now beckons urban explorers.

An ideal wedding spot that is almost too ideal.

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

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

An Olympic hero stripped of his medals is buried in a town he never visited, which took his name after his death.

This jail which was in service for over a century is now open for curious visitors.

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

The internal railway of one of the biggest steel plants in America has been transformed into a linear park with unique industrial views.

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