Little Red Lighthouse under the George Washington Bridge.

Curious crustaceans support an obelisk from ancient Egypt that now stands in modern-day Central Park.

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.

Visit the monolithic tomb of America's most famous general.

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

A three-story copper skybridge connects two Manhattan buildings with Art Deco luxury.

This Wall Street bar was once a hub of revolutionary activity where Washington famously bid farewell to his troops.

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

An American city stranded at the tip of a Canadian peninsula where strict adherence to the "49th parallel rule" became problematic.

A millionaire's abandoned swimming pool from the gilded age of one of America's most distinguished families.

A formerly abandoned mental institute, now back in business.