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

Infamous marsh filled with toxic waste, World War II-era London rubble, and dead mobsters galore.

Vacant Beaux-Arts buildings that serve as reminders of a beach town’s glory days.

A world-class collection of mechanical musical instruments and automata.

The last holdout of a pre-Civil War rebel who took the matter of slavery into his own hands.

This huge, disused viaduct is now a crumbling concrete underworld of covered in years of graffiti.

A farm in New Jersey grew a most unusual crop for AT&T's testing purposes.

A historic grist mill and active sluice on the Black River.

Historic town settled in the 19th century because of its convenient location along a popular coal transport route.

This ominously named New Jersey street seems to be attracting over-the-top legends of its own making.

Local lore claims this park is named after a young woman who jumped off a cliff.

This massive boulder is either a unique rock formation created by glacial melt or a magic energy vortex.

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

The remains of the furnace and iron works that produced the massive Hudson River Chain still stand in the woods of New York.

This scout retreat, still in use today, was the filming location for the original “Friday the 13th” film.

This hospital fell into ruins after failing to act as the advocate for the mentally ill it was designed to be.

The largest earthwork effigy in the world.

Largest Roman Catholic church in North America.

This isn't your average roadway—it's actually a National Park and a transportation pioneer.

Soldiers were buried next to Lee's house in the center of Arlington Cemetery to dissuade the general from reclaiming his property after the war.

This war hero's old shop remembers the fine line between medicine and quackery during the Revolutionary War.

An organ located deep within a cave, whose "pipes" are the geological features of the cave itself.

The granddaddy of all tourist traps, built on ice water, jackalopes, and a giant dinosaur.

The only natural lake in the world that drains into both the Atlantic and Pacific Oceans.