Narrowest house in Boston.

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

Despite the name, this 16th-century structure in Galway wasn't built by the Spanish.

A moody and picturesque riverside ruin overgrown with vegetation.

The oldest pub in Ireland may also be the oldest surviving bar in the entire world.

This courtly monument celebrates an influential comedian who turned taking the piss out of the powers-that-be into an art.

The comedy and tragedy of Oscar Wilde is preserved in a Dublin park, captured in a sculpture of colorful stone.

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

A corkscrew-shaped barn in Ireland.

A massive rotating globe sits at the center of Babson Park.

Craggy concrete faces are hidden in the walls of this artificial cave along the San Antonio River.

This hidden sculpture garden full of Wild West art is one of San Antonio's best-kept secrets.

In Gloucester, Massachussets, fishermen celebrate a successful year at sea by charging a lubed pole to capture an Italian flag.

An 80-year-old house built out of newspapers.

Though many were skeptical at first, these animal-specific routes across the Trans-Canada Highway have been a major conservation success.

An early work of the architect Álvaro Siza Vieira, these swimming pools blend into the beach.

This 1920s Dutch barge is now a floating bookstore.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

Once designed as the entrance to Buckingham Palace, this structure was later relocated and stands as a victory arch.

The popularity of Sherlock Holmes led to the creation of his fictional address, turning the orderly London street numbers askew.

This ancient oak plays host to carvings of magical elves, gnomes, witches, and other creatures prominent in local folklore.

One of the world's tallest flagpoles.

A monument to the civilian victims of the Japanese Occupation forces of World War II.

This statue once earned the distinction as one of the "Three Major Disappointments of the World."