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

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.

This charming colonial alleyway is one of the oldest continuously used residential streets in the U.S.

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

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

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

Color-coded signs direct drivers on a network of routes designed to avoid Pittsburgh traffic.

A portion of the old Pirates stadium over which a defining home run once flew still stands even after the rest of the stadium was torn down.

Once the most painted on object in the world, this short campus fence is well on its way to being so again.

Meet your friends, marry your true love, or tell your enemies to kiss your butt under this historic Pittsburgh timepiece.

A model of a dinosaur that was named for Andrew Carnegie stands outside the museum that also bears his name.

The largest university building in the West is a gothic masterpiece containing dozens of theme rooms based on different countries.

A restored Pittsburgh house of God has been converted to a marvelous house of suds.

Yo, Adrian!

Philadelphia boasts one of the best — and most often overlooked — traditional Japanese gardens in North America.

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

The watery entrance for condemned prisoners heading to the Tower of London is still visible along the Thames.

This one has sailed five times as far as Sir Francis Drake's famous ship.

The perfectly preserved underground rooms where Churchill plotted the war against Germany.

A statue marks the exact spot where The Boy Who Never Grows Up made his first literary appearance.