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

This strange, big-tailed beast became a Pennsylvania town's unofficial mascot.

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

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

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

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

A rare view of a preserved Victorian science museum.

Mysterious rocks that ring musically when struck.

This bleach-white graveyard overlooking the ocean is accessed through a tunnel.

Legend tells how a Spanish soldier disappeared from this isolated sentry box without a trace.

This private residence was the template for one of the most beloved television homes of all time.

The last remaining relic of San Francisco's glittering 1915 Panama Pacific Exposition.

Relics of the 1894 Midwinter Exposition continue to delight visitors today.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

Come for the Italian food, stay for the taxidermy and giant statues.

The rusting remains are visible sticking out of the waters of the Delaware Bay.