The last remaining relic of San Francisco's glittering 1915 Panama Pacific Exposition.

There is no trying to fall in love with this Star Wars fountain, you just do or do not.

Inside this museum, the history of the Walt Disney Family empire is on full display.

A second generation sun-powered marvel lights up the night.

Atlanta's strange assortment of concrete pillars inspires reflection in some, confusion in others.

An ossuary built in 1210 to collect bones from the Ospedale Maggiore of Milan.

Southern Italy's spinning top village.

Macabre astrological automaton clock dating to the late 1400s.

A Jenga-style cylindrical tower of books that appears to go on forever.

A bust of Franz Kafka spins in pieces, reflecting the writer's inner torment.

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

One of the best-preserved Roman amphitheaters is still used today, but for less brutal events.

The smaller of the three towers of San Marino is a former prison inaccessible from the ground level.

Psychoanalyst Carl Jung reported a paranormal experience after visiting this mosaic-lined Roman baptistry.

Italian poet Dante Alighieri is entombed in this small mausoleum in Ravenna, and his hometown of Florence has never been too happy about it.

A medieval, mosaic-lined baptistry built by a heretical Christian sect.

This 6th-century church has the largest and best-preserved collection of Byzantine mosaics outside Constantinople.

An incredible mosaic-lined monument said to have held the remains of an ancient Roman empress.

Two stone columns flank the grand Venice square, but there were supposed to be three.

This Venice bookstore has resigned itself to constant flooding by keeping its books in bathtubs and boats.

This palatial spiral staircase was so unusual the name "snail" was given to the noble family who built it.

Pilgrimage site for star-crossed lovers.

Not far from the more famous House of Juliet, visitors will find the supposed residence of her lover.

These elaborate gothic monuments honor Verona's medieval lords.