Rat sculptures try to infiltrate the Graybar Building in an architectural tribute to New York City's nautical history.

This Manhattan skyscraper is a reminder of the brief but glorious age of urban air taxis.

New York City's first Modernist house.

If it hadn't been caught in time, a flaw in the design of this Manhattan skyscraper could have led to its collapse.

This unmarked and unloved Manhattan subway grate created one of the most iconic images in American cinema.

Captain America, Sub-Mariner, and the Human Torch were all born in this art deco Manhattan masterpiece.

Amid the marketing blitz of modern Times Square is an elegant holdover from its showbiz glory days.

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

The 28-foot granite map plots the locations of 40 theaters in New York City.

There must be a pun in this haystack somewhere...

A semi-scholarly approach to sex.

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

The one-time epicenter of American songwriting is now a little remembered Manhattan commercial block.

A three-story copper skybridge connects two Manhattan buildings with Art Deco luxury.

There are owls with glowing eyes in Herald Square.

A bit of retro transportation flair preserved in the world's largest department store.

Yo, Adrian!

Step into a pastel time capsule where candy is truly dandy.

An Irish Memorial commemorating those who perished due to potato blight.

The oldest active church in Pennsylvania is also the second oldest Swedish Church in the United States.

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.

America’s smallest national park site is the former residence of exiled Polish national hero Thaddeus Kosciuszko.

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