Unrepaired walls from a 1920 anarchist bomb attack.

New York City's only preserved family home from the 19th century.

An annual extravaganza of Broadway theater memorabilia.

An arcade packed with a rotating collection of unique independent video games.

This wall on a street corner in Lower Manhattan has been a blank canvas for a rotation of renowned artists since the 1980s.

A charming "tea atelier" hidden away in Greenpoint, Brooklyn.

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

This Wall Street bar was once a hub of revolutionary activity where Washington famously bid farewell to his troops.

The walls are decorated with whimsical murals painted by the creator of the Madeline franchise.

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

The remnants of two World's Fairs are here, complete with a 12-story globe, a mini-Manhattan, and a UFO-shaped pavilion.

The oldest operating apothecary in the US has treated everyone from Thomas Edison to Mark Twain.

New York's oldest magic store.

A terrific purveyor of natural history objects and curios.

The sister plane of the C-123 shot down during the Iran-Contra Affair has found a new purpose in retirement.

Cleveland's giant "free" stamp is a nod to the Civil War, but was misinterpreted for years.

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

Two thirds of this Montreal neon icon has survived to flash another day.

Designed by Buckminster Fuller, this relic of the 67 Expo survived fire and ice.

The fairy tale castle of the "fairy-tale king."

This humble star-gazing center touts itself as the "Birthplace of American Astronomy."

A monument to a Native American leader who was known for never breaking a promise and met his end after signing a deal with white settlers.

Hear the quietest sound from across the dome.

A centuries-old church stands as a testament to Boston's "father of architecture."