A moody and picturesque riverside ruin overgrown with vegetation.

It was once nicknamed "the most bombed hotel in Europe."

This Victorian-era public house has set the standard for pub-style elegance for over a hundred years.

This 18th-century fort surrounded by a moat was used to store gun powder and ammunition, and now sits in the middle of a large part in Dublin.

The oldest public library in Ireland.

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

An Irish church where an 800-year-old mummy is reaching out of his coffin as if to shake hands.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

The modern birthplace of Irish freedom.

Mexican food and folk art.

Giant scissors seemingly stabbed into the side of a hair salon leave no question about the vocation of the owners.

Large but largely ignored, these 42 life-size Liberty Bell replicas were a peculiar, unexplained feature on the facade of a Macy's department store.

An anonymous art project beneath Longfellow Bridge where hundreds of trophies line the steel support beams.

This upscale streetwear store is hidden behind a fake Snapple machine in the back of a deli.

This nearly endless university hallway is home to a unique sunset known as "MIThenge."

In 1958, an MIT fraternity pledge laid down on this bridge and instituted a new, unique unit of measurement.

This bridge was the birthplace of a unit of measurement based on a fraternity joke.

This nearly 200-year-old restaurant's history includes an exiled French prince, JFK, and a very hungry Daniel Webster.

Dim sum, served in a grand old theater.

The trials and tribulations of marking Poe's grave.

It's not hard to see why the historic Peabody Conservatory of Music's library has been described as a "cathedral of books."

Once a thriving business district, this former shopping area is now an urban ghost town in the heart of the city.

Oldest existing church in New York and the inspiration for Washington Irving's "The Legend of Sleepy Hollow."

America's greatest forgotten garden and the former stomping grounds of Son of Sam.