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

This historic address is home to the beloved ball and is an almost totally empty building among the most expensive real estate in the world.

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

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

The world-record holder for the longest bridge stretching continuously over water.

This historic "City of the Dead" lies prominently in the center of New Orleans' famous Garden District.

The oldest cemetery in New Orleans, resting peacefully for over 200 years now.

Once designed as the entrance to Buckingham Palace, this structure was later relocated and stands as a victory arch.

Chelsea's soldiers were given strict orders when crossing this historic bridge.

A tribute to all the green-thumbed workers who tend London’s public parks and gardens.

The Great Fire of London and the regulation of one-way streets both started in this alley.

London's only public statue of the much-married monarch adorns the gate to St Bartholomew’s Hospital.

The pretty iron lamp is a reminder of the architecture underneath London's streets.

An architectural oddity hides in plain sight on this iconic London bridge.

The last four extravagant street signs of London's historic banking street.

Public access to clean drinking water was an instant hit among the masses.

London's last remaining public soapbox site has seen speeches from Karl Marx, Vladmir Lenin, and George Orwell.

Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.

A statue marks the exact spot where The Boy Who Never Grows Up made his first literary appearance.

Chicago's Navy Pier on Lake Michigan was a training hub for aircraft carrier pilots during WWII.

A spectacular remnant of an Adler and Sullivan masterpiece that was destroyed in 1972.

Not to be confused with the iconic New York City skyscraper, this Chicago building is a vibrant hub for artists.

The only Bahá'í house of worship in North America and one of only a handful worldwide.

This statue of a falling man commemorates a teenage martyr of the Hungarian Revolution.