A plaque immortalizes the spot where the early American spy said his famous last words: "I only regret that I have but one life to lose for my country."

During the 19th century, you could pay for violence off a prix fixe menu on this Manhattan street.

This historic building housed the surviving crew members of the Titanic, who were left destitute after the wreck.

Captain America, Sub-Mariner, and the Human Torch were all born in this art deco Manhattan masterpiece.

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

The most confusing clock in New York.

An annual extravaganza of Broadway theater memorabilia.

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.

The New York hotel where tragic visionary Nikola Tesla spent his final hours, destitute and alone but for the pigeons.

Plot your trip through the city on the sidewalk.

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

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

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

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

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

A celebration of capitalism in Midtown.

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

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

A miniature rainforest is growing inside of a Midtown Manhattan office building.

Try not to get slimed in Tribeca.

Dublin's most modern, visually spectacular bridge is modeled after Ireland's national emblem.

These imposing walls and towers look more like the ruins of a fortress than a monastery.

Mortarless walls that stretch for miles are a lovely solution for creating grazing land in the harsh terrain of the Aran Islands.

Certain traditions prevail on the least-visited island of the Aran Islands.