Black cat statues guard this temple-like Egyptian revival factory.

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

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

"Mock all and sundry things, but leave the saints alone."

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

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

One of the last remaining World War II Victory Gardens in the U.S. is quietly growing across from Fenway Park.

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.

The Boston square dedicated to the dark poet who was born nearby.

These bronze sculptures sow whimsy by hamming it up on a pedestrian mall.

In the middle of a Vienna square, Roman ruins dating back some 2,000 years are on display.

Baroque celebration of the end of the Great Plague of Vienna.

The world’s second-largest flood defense barrier has protected London for decades.

Sculptor Antony Gormley used chaos theory and fractal growth to design his tallest creation.

Originally built for London’s cab drivers, this bright green hut now serves anyone a hot drink or meal.

A quiet, semi-secret square with statues of Mahatma Gandhi, Virginia Woolf, and a conscientious objectors stone.

A collection of comics, graphic novels, animation and caricatures devoted to exploring this often overlooked art form.

Originally meant to hold a statue of King William IV, this support sat empty for years. Today, it hosts a rotating cast of public artwork.

The Great Fire of London and the regulation of one-way streets both started in this alley.

The bronze uniforms commemorate the vital role of women during World War II.

A statue of the legendary Celtic warrior queen who fought the Roman invaders stands in one of the cities she once destroyed.

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

The granddaddy of English geoglyphs dates back to the late Bronze Age.