The remnants of two World's Fairs are here, complete with a 12-story globe, a mini-Manhattan, and a UFO-shaped pavilion.

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

This unmarked and unloved Manhattan subway grate created one of the most iconic images in American cinema.

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

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

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

Millions of numbers carved in glass represent the tattoos forced upon victims.

The world's largest piece of copyrighted artwork.

An interesting decoration on this historic site, this weathervane comes with as many legends as it does questions.

On a former island, this old fortification once used to protect the Boston Area and started Edgar Allan Poe in his military career.

This massive tea kettle was once a promotional stunt for the Oriental Teashop.

This monument on Breed's Hill proves that one of the most famous battles of the Revolutionary War is misnamed.

Mrs. Mallard and her brood are a beloved fixture in Boston Public Garden.

The massive machine creates cracking displays of indoor lightning.

Ice cream stand, snack bar, and time capsule of milk conveyance.

The bears may be gone, but their old cages can still be found.

The site of Paul Revere's historic two lantern warning.

Berthed at the Charlestown Navy Yard in Boston, "Old Ironsides" is the oldest commissioned warship still afloat.

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

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

A beautiful Victorian-era cemetery, complete with a miniature village.

The video game-themed street art first popped up in the French city.

This life-size replica of the Statue of Liberty's flame is also a tribute to Princess Diana by default.

This statue was given to France by the United States to commemorate the centennial of the French Revolution.