The Victoria-era quarantine station for Sydney.

A storefront museum in Asbury Park honoring the Jersey Shore’s deep history of mystery—including the Jersey Devil.

The world's only surviving heavy cruiser has a haunting history.

A men’s restroom became a sandwich shop.

A beautiful, creepy 19th-century castle stands incongruously in rural Vermont.

This covered bridge was used by both Union and Confederate troops during the Battle of Gettysburg in 1863.

Home of the only civilian casualty at the Battle of Gettysburg.

The "All-Seeing Eye of God" symbol on this library is a clue to one of the many former lives of this building.

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

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

The trials and tribulations of marking Poe’s grave.

Try not to get slimed in Tribeca.

The home of the first American-born saint is one of the only curved buildings in New York.

Once America's longest-manned military fort, now an abandoned hulk.

The pioneering photographer's prints are immortalized inside her childhood home.

Featuring the the longest lift span of any vertical-lift bridge in the world.

The haunting, dilapidated remains of a former poorhouse on Staten Island's Greenbelt.

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

Island where motor vehicles are banned -- home to the only carless highway in the United States.

Beautiful scenery, history, science, and physics come together in this remnant of shipping lore.

Watch the ships come in on Michigan's 210 ft. high observation deck in Sault Ste. Marie.

A mysterious echo seems to defy the laws of acoustics.

Collapsing castle on the Hudson river was once the storage site of military surplus business.

Oldest existing church in New York and the inspiration for Washington Irving's "The Legend of Sleepy Hollow."