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.

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

One of the oldest used bookstores in the U.S. has been selling antiquarian treasures since 1825.

The tradition of open-air secondhand and antiquarian bookselling in Paris dates back to the Renaissance.

A Gothic-inspired fish market is Gothenburg's best place to find loaves and fishes.

Amsterdam's former hotspot for public executions and dissections.

This unattributed sculpture in Amsterdam is hiding in plain sight.

Famed for its pie, this eatery has a hidden tunnel that allowed Catholics to secretly walk to church during the Reformation.

This historic Amsterdam bar used to accept sailor's monkeys as payment.

A floating cat sanctuary on an Amsterdam canal.

The remnants of a depressing public toilet are now a hub of ever evolving street art.

The city of Manchester quietly unveiled this tribute to a 19th-century massacre.

Manchester salvaged this sculpture of the adopted Mancunian when it was no longer wanted in Ukraine.

This handsomely carved wooden church is more than 800 years old.

These legendary stone steps were once used to haul coffins up the rockface.

A 16th-century footpath said to be haunted by a young girl that died trapped within its misshapen old house.

The former headquarters of history's oldest megacorporation.

A hidden church in a hidden courtyard tells the story of the Miracle of Amsterdam.

A beautifully eclectic mix of architectural styles.

A massive volcanic plug is now a protected area that hosts a number of bird species.

Get up close to emus and ostriches, or buy their tasty meat.