Three and a half miles of cliffs, rocky beaches, Gilded Age mansions and 40 Steps to nowhere in particular.

After decades of neglect, a brutalist icon is getting new life as an eco-friendly hotel.

Connecticut's shot tower is near the end of its life.

"A hideous albatross in the Hudson River Valley."

This monument on Breed's Hill proves that one of the most famous battles of the Revolutionary War is misnamed.

One of the most enjoyable bits of history at Coney Island and “the most romantic ride in the world.”

A large boulder marks the place where the island of Manhattan was purportedly "sold" to the Dutch.

Walking around West Harlem reveals a scavenger hunt of beautiful bird murals.

The only home that Alexander Hamilton ever owned has a history almost as troubled as his own.

The "Seinfeld" diner.

Outstanding taxidermy dioramas showcase the grandeur of the continent's wildlife with spooky realism.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

A pedestrian island in the middle of world-famous Times Square emits a strange (and purposeful) humming noise.

A semi-scholarly approach to sex.

A 19th-century politician who died after walking home in a blizzard is honored with this Manhattan statue.

Elevated freight railway turned wildly successful urban park.

The first piece of public art dedicated to LGBT rights.

An uber-secure, windowless tower of doom in the center of Manhattan is an NSA spyscraper.

Pulled from the rubble of one of the worst modern tragedies, a steel crossbeam became a symbol of hope for New Yorkers.

This sculpture by artist Fritz Keonig survived the 9/11 attacks and now stands as a monument to the victims.

This cemetery has graves dating back to the 17th century, including the city's oldest carved tombstone and an ominous cryptogram.

Manhattan’s Battery Park has a whimsical carousel full of spinning, glowing fish.

“Invented in Key West, Perfected in Brooklyn."

The remains of a community that was forced to move for a dam that never materialized still rot in this Pennsylvania park.