In Florence's great Duomo, a 26 foot fresco honors a mercenary famous for attacking Florence.

It houses the remains of a 17th-century version of the Titanic.

Stockholm's decidedly unique public transit system has doubled as the world's longest art gallery for decades.

One man's exploration of the human form, including the bizarre and delightful "Man Attacked by Babies."

Housing the famous Norwegian ice-defying 19th century polar exploration ship.

This hospital helped pave the way for treatment that drove down child-mortality rates in 19th and 20th centuries.

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.

Museum celebrating the history of computers, especially their role in codebreaking.

Numberless clock creates a meal of time for the dreaded, insectile Chronophage.

The most loyal of little dogs, or a Victorian era publicity stunt?

Recently restored menagerie of Victorian-era beasts.

A miniature Italianate fantasy village on the coast of Wales and the set of ITC classic "The Prisoner."

The fairy tale castle of the “fairy-tale king,” this was also the inspiration for Disney’s “Sleeping Beauty.”

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

Madrid's romantically ornate crystal palace has been offering shelter to plants and art for over a century.

A Victorian natural history and ethnographic museum with wonderful turn-of-the-century, science-book-esque evolution displays.

A historic London cemetery now serves as a nature park incorporating gravestones & memorial statues.

A 1,215-foot tunnel transports pedestrians beneath the River Thames.

One of the few standing Roman lighthouses and a labyrinth of tunnels are a couple of the secrets at this historic castle.

Grotto replete with mystical designs laid out in glued shell mosaics.

Mysteriously stacked storefront paths give this medieval British town an iconic style like none other.

Giant statue of a disembodied head.

Three hundred years of preserved Spanish colonial history in San Antonio.

Established in 1925, Kiddie Park claims to be the oldest amusement park in the U.S. - a cozy little time warp nestled in a shady corner of the modern world.