A swaggering, monumental souvenir of the most extravagant party Montreal’s ever thrown.

This 1967 experiment in modular architecture was designed to be a new model for urban living.

You don't have to be an ambassador to dine like one.

Those belting out show tunes might not realize this piano bar marks the site where Thomas Paine died in 1809.

The first piece of public art dedicated to LGBT rights.

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

This exemplar of modernist architecture is meant to captivate and inspire students of the Cooper Union.

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

The site of the deadly Triangle Shirtwaist Factory Fire.

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

This futuristic airport terminal was abandoned for decades before reopening as a hotel—with a vintage plane of its own parked out back.

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

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

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

New York City's smallest piece of private property.

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

A dilapidated dock tells the story of Titanic's missed arrival.

This 45-story tall abandoned skyscraper is the third tallest building in New Orleans and Lousiana.

This distinctive Crescent City tradition dates back to the days of horse-drawn carriages.

The beautiful, fruit-covered facade hints at this building's former life.

Parts of the civil rights movement unfolded in this historic eatery, helmed by the "Queen of Creole Cuisine."

Formerly known as National D-Day Museum, this collection commemorates the battles of Normandy and WWII.

This bar named after the world's first mixed cocktail was home to one of New Orleans' most notorious politicians.

A 200-year-old bar in the historic French Quarter refuses to give up its place in history, nor its role in securing ours.