The singer, actor, and activist lived here during his final years, and now it’s a museum dedicated to his legacy.

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

A collection of anti-communist sculptures stands watch in the Mojave Desert.

America's first serial killer rests in anonymity.

The oldest surviving botanic garden in the United States.

The world's third-largest crystal sphere has sat in the Penn Museum since 1927 with the exception of one outlandish theft.

These medicine cabinet staples are part of the museum's collection of everyday objects.

One of the few remaining monuments dedicated to South Boston's Irish heritage.

This was one of the first (and last) university-built and operated nuclear reactors.

There’s a secret bunker inside the Brooklyn Bridge, but the city won’t say where.

Unrepaired walls from a 1920 anarchist bomb attack.

Blighted Irish field and the ruins of a 19th-century cottage on the edge of urban Manhattan.

A beautiful and abandoned New York subway station from 1904, complete with chandelier.

In the early 1800s, surgery was also a show.

Dr Barnes' $25 billion private collection of art and arboretum.

This meticulously extracted nervous system allegedly came from a 19th-century custodian who donated her body to science.

This Philly cemetery is the eternal home of many famous area residents, including Rocky Balboa's wife.

This little-known collection holds everything from "Dracula" notes, to the manuscript of "Ulysses," to the forged works of Shakespeare.

A rare view of a preserved Victorian science museum.

Tour the dark and beloved poet's former cobwebbed basement, which may have inspired "The Black Cat."

Where America's first doomsday cult awaited the end of the world.

An abandoned cemetery lies in ruins as the surrounding forest swallows it whole.

A small plaque highlights the damage caused by German air raids during World War II.

Just a few miles off the western coast of Ireland lies an isle steeped in Irish literary history.