This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

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

The final resting place of New Orleans' most famous voodoo priestess.

The perfectly preserved underground rooms where Churchill plotted the war against Germany.

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

Stolen goods adorn the organ at Old North Church.

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

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 site of Paul Revere's historic two lantern warning.

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

An enormous, inside-out glass globe built in 1935.

Amsterdam's narrowest house facade is a monument to 17th-century tax evasion.

Erotic art covers the walls of the largest ancient pleasure palace.

The last moments of the ill-fated Pompeiians, frozen forever in plaster.

Ever hear of the Milazzo Cage?

Pilgrimage site for star-crossed lovers.

A new sculpture calls attention to climate change in the centuries-old city it threatens.

The fairy tale castle of the "fairy-tale king."

Sitting in the basement of a castle, the largest wine barrel in the world is bigger than most apartments.

This historic toy museum brings a little whimsy to a city not usually remembered for such things.

Daily jousts and dancing barrel makers in Munich's mechanical clock.

A winding path built in secret on the edge of the continent.

Depicting scenes of everyday life - and specific individuals - in Great Depression era San Francisco.