This magnificent blue mosque in Afghanistan is surrounded by thousands of white doves.

Once an impressive link to Afghanistan’s Buddhist past, now a sad reminder of intolerance towards other cultures.

This 23-foot-tall bear stands amid the hustle and bustle of Hamad International Airport.

Home of the infamous Rug Man of Doha.

This road earned its macabre nickname after hundreds of Iraqi troops died along it in 1991.

Kuwait City's uniquely designed water towers look straight out of a retro sci-fi cityscape.

The sci-fi villain is a little-known inhabitant of the U.S. capital's largest cathedral.

This unique historical monument features large concrete spheres designed to resemble fallen stars.

While most wind tunnels test scale models, the "Cave of Winds" was large enough for actual airplanes.

Long-abandoned trolley tunnels just a mile away from the White House are turning into an art space.

A monument in Washington D.C. marks the spot from which all other roads were supposed to stem.

This outdoor gallery of graffiti-covered walls pays homage to the past, present, and possible future of street art.

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

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.

One of the most enjoyable bits of history at Coney Island and “the most romantic ride in the world.”

A historic 1890s architectural masterpiece with an iconic clock tower that, once open to the public, now faces an uncertain future.

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

This sculpture by artist Fritz Keonig survived the 9/11 attacks and now stands as a monument to the victims.

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

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

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

The popularity of Sherlock Holmes led to the creation of his fictional address, turning the orderly London street numbers askew.

Millions of numbers carved in glass represent the tattoos forced upon victims.

The world's largest piece of copyrighted artwork.