On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

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

The highest point in New Jersey is marked by a massive, if simply named, obelisk.

This disastrous New Jersey safari park saw animal attacks, escapes, and disease before being abandoned.

The first "Hall of Fame" in America was designed by legendary Gilded Age architect Stanford White for what was then the NYU uptown campus.

The oldest surviving bridge in New York City, which reopened to pedestrians in 2015.

Home to the infamous "Typhoid Mary" and the worst loss of life in New York's history prior to September 11, 2001.

Small monoliths of several varieties of stone sit alongside a wooded path in the Bronx.

Manhattan and the Bronx have been playing tug-of-war over this former island neighborhood for more than a century.

The famous author's cottage hideaway.

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

Final resting place of two dozen New York City harbor ships.

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

These eclectic homes nestled into the cliffs of a Caribbean island were built entirely from scavenged materials.

This monument to a veteran of the Mexican-American War is one of only two in Manhattan that serve as an actual mausoleum.

This Route 66 classic sports a giant fiberglass rabbit that you can ride.