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

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

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

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

Love, knishes, and best wishes from this legendary Lower East Side bakery.

A popular European tradition makes its way to the states on one of America's most famous bridges.

Great place to have a drink and a bite to eat in an atmosphere laden with New York's Bohemian past.

This massive collection of British military artifacts includes the heartbreaking personal letters of the men in the trenches of WWI.

The Metropolitan Police refurbished the blue box (perhaps not coincidentally) the same year "Doctor Who" returned to TV screens.

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.

The oldest surviving synagogue in New York City is now a soaring art space.

The world's oldest hologram gallery and the labyrinthine laser laboratory of a holography pioneer.

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

The original toys that inspired the beloved children's stories are on display at the New York Public Library.

A very classy 1920s-era bar right in Grand Central Station.

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

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

A celebration of capitalism in Midtown.

Scattered throughout London are ancient remnants of the city's former bounding wall.

The "Seinfeld" diner.

Mysterious 500-year-old tapestries depict a unicorn hunt.

This cemetery has graves dating back to the 17th century, including the city's oldest carved tombstone and an ominous cryptogram.

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

New York City's smallest piece of private property.