This landmark cemetery in Boston was created more than 300 years ago.

A collection of 20th-century automata, penny arcade games, and musical contraptions.

Scores of vintage street lamps shine along L.A.’s Miracle Mile.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

The first geometric self-supporting spiral stairs in Britain are a truly beautiful sight.

Macabre headstones carved with winged skulls, dancing skeletons, and pithy reminders of impending death.

A former waterfront market is now in the center of town due to some interesting Boston engineering.

The American Revolution was galvanized into serious action due to the tragic clash with British soldiers that occurred at this location.

This hidden oasis features a stunning view of the Hudson River and the Palisades from a castle-like museum.

Mysterious 500-year-old tapestries depict a unicorn hunt.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

These barriers stand as stark reminders of Northern Ireland's troubled past.

A series of stained glass artworks that depict images of the hit TV show.

This picturesque lighthouse at the edge of the Irish Sea looks like a giant stone pencil.

A giant sculpture of the legendary "Salmon of Knowledge" celebrates the return of fish to Belfast's River Lagan.

An Irish cemetery filled with victims of political strife and violent conflict, including the grave of Bobby Sands.

The "Black Arch" guards the entrance to the picturesque Glens of Antrim.

The ruins of this medieval castle in Northern Ireland have inspired artists from C.S. Lewis to Led Zeppelin.

Northern Ireland's Brobdingnagian stepping stones.

The watery entrance for condemned prisoners heading to the Tower of London is still visible along the Thames.

Richard III supposedly disposed of his nephews' bodies here in an effort to seal his claim to the throne.

According to legend, this tomb holds the secrets to time travel.

This massive stained-glass masterpiece is thought to be the largest Tiffany dome in existence.

Two thousand artifacts from around the world collected by one woman who loved to travel.