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

The crown jewel of the Queens Museum is a nearly 10,000-square-foot architectural model of the city originally built for the 1964 World's Fair.

The library of every book lover's dreams.

Once America's tallest structure, now a Baltimore landmark.

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

A clock set into the concrete outside a Manhattan jeweler has been telling time underfoot for over a century.

Rat sculptures try to infiltrate the Graybar Building in an architectural tribute to New York City's nautical history.

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

The most confusing clock in New York.

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

Salute the leader of the proletariat.

A small peaceful park and waterfall tucked amid the urban grind of Midtown Manhattan.

Commemorating the spot where the famous scientist fed his pigeons.

Unrepaired walls from a 1920 anarchist bomb attack.

An artist's cute bronze subway sculptures belie his violent artistic past.

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 curious fountain that has no water and includes Satan, a crab, and 9 giraffes.

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

Under a glass sidewalk lie the remains of some of Manhattan's oldest buildings.

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

Lie in a hammock where George Washington stood.

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

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

Plot your trip through the city on the sidewalk.