Built hundreds of years ago this downtown iron barrier once protected a much despised king.

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

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

This abandoned subway station beneath the Waldorf-Astoria hotel is allegedly used to secretly transport presidents.

Once the tallest building in the world and the site of "the highest dinner ever held in New York" this building now holds the most expensive penthouse in the city.

During the 19th century, you could pay for violence off a prix fixe menu on this Manhattan street.

A strangely angled West Village home is the only monument to an explosion that took the lives of three American revolutionaries.

A Manhattan courthouse hides a small but scathing memorial to Holocaust injustice.

The one-time office of the architectural firm that ushered in the Gilded Age is now a Club Monaco.

The last remnants of what was once one of the world's grandest hotels can now be found in a Manhattan subway station.

Where now stands a 42-story condominium tower of marble, glass and steel was once the central market of New York’s slave trade.

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

Nope, not Washington Irving's house.

This simple Manhattan salt house is artfully shaped... well, like a giant granule of salt.

This castle-like building in Manhattan helped destigmatize cancer in the 19th century.

Hidden in one of New York's oldest subway stations is the final remnant of the site of the bizarre Shakespeare Riots.

A dark patch of the ceiling at Grand Central Terminal which was not restored is still stained brown by tobacco.

This whimsical group of statues is a favorite of children who love to climb all over Lewis Carroll's beloved characters.

A small peaceful park and waterfall tucked amid the urban grind of Midtown Manhattan.

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

Beautiful mosaics cover the first stations opened on New York City's newest subway line.

One of the last Jazz Age "Wonder Theaters" in New York City.

Wall Street has a new heroine, a bronze statue of a small but fierce girl.

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