The only structure left with direct ties to the Salem witchcraft trials of 1692.

A simple but powerful tribute to the 20 victims of the 1692 witch trials.

The twin towers in this Chicago fountain use 50 foot tall video screens to spit on people.

A dozen U.S. presidents have stayed at the historic resort, which was known as James Buchanan’s “Summer White House” from 1857-1861.

This university transit system is a 1970's vision of the future.

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

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

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

The United States’s oldest funicular railway glides up and down a steep Pittsburgh street.

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

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

This stone tower marks a lookout point over the historic Washington Crossing, and maybe some buried treasure.

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

A historic covered bridge is but one example of an oddly prevalent American urban legend.

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

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

Designed by Horace Trumbauer in 1893, this Gothic-style castle is now a home for academics.

An eccentric priest's tribute to George Washington, this chapel tells the story of the American Revolution.

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

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

The first American department store, and home to the largest operating musical instrument in the world.

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

The world’s first penitentiary, meant to be humane, drove men insane.

Yo, Adrian!