This empty Victorian manse on Staten Island is said to be haunted but is actually a real life crime scene.

Alexander Hamilton’s creation caused quite a bit of controversy.

A sculptor's dream castle turned fantastical ruin.

Yo, Adrian!

This quaint New Jersey graveyard is an eternal resting place for thousands of beloved pets.

The sounds of the world's largest fully functioning pipe organ dazzle shoppers at a Philadelphia Macy's.

A clone-tree in Washington Square Park sprung from seeds that went to the Moon and back.

One of the oldest of its kind.

Ant sculptures march up the side of what used to be an iconic spot in punk rock lore.

A layered tribute to the work of mosaicist Isaiah Zagar.

South Philadelphia is home to Keith Haring's only surviving in situ collaborative public mural.

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

World's first "penitentiary," meant to be humane, drove men insane.

The feral felines of Roosevelt Island have a small army of allies and an abandoned hospital all to themselves.

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

A piece of the iconic wall found an unlikely new home in a Vegas bathroom.

This 19th century train workshop is a treasure trove of railroad history.

An eccentric home stands out in an otherwise average neighborhood with mosaics, mini topiaries, and kinetic sculpture.

This concrete tangle of square pipes has stood as a proud thorn in the city's side since the '70s.

Inspired by a foil-wrapped potato, (seriously) the Markel Building has been deemed one of the 10 ugliest buildings in the world.

This 29-ton granite ball spins around at the slightest touch thanks to a scientific phenomenon.

This too-low North Carolina railroad trestle is still a notorious big rig executioner.

This woodland architectural installation acts as a camera obscura for the heavens.

South Carolina's last remaining slavery auction house is now a museum devoted to its own tragic history.