The exterior of this home was used for the hit television show, The Brady Bunch.

This forgotten Frank Lloyd Wright house is an architectural marvel at the end of a sleepy residential street.

This hilltop park offers magnificent views and a Frank Lloyd Wright masterpiece.

This ultra-modern home clings to the slope of the Hollywood Hills on a precarious stilt.

The final resting place of a space program monolith.

In a city filled with Frank Gehry buildings, one stands out as one of the architect's weirder works.

Beautiful Victorian buildings from L.A.'s forgotten architectural past.

This brightly made over hotel hides decades of suicide, serial killers, and mysterious deaths.

Most famous work of one of Frank Lloyd Wright's sons.

Sister store to the Echo Park Time Travel Store.

These medieval skyscrapers dominate the skyline of this small Tuscan town.

The only visible reminders of an elaborate engineering project that kept the tower from reaching the tipping point.

This enchanting 600-year-old tree is so magical it inspired the beloved tale of Pinocchio.

Fortified medieval tower house with lovely roof garden.

Memorials at a Florence railway station remember the citizens who were deported from Italy and sent to extermination camps.

Secret refuge and museum of the Duke of Florence.

The famous sculptor left his mark on this Italian wall in an internationally protected example of street art.

A large grotto built in the 16th century amidst Florence's famous Boboli gardens.

The doodles of a genius line the walls of a secret room under the Medici Chapel, where they were hidden for nearly 500 years.

This building features dozens of faces along its facade, although one is a bit chilling.

The wreckage of a tragic plane crash is on display at this museum devoted to a famous Italian conspiracy.

Legend has it this fountain built to symbolize the Pope’s power hides a strange secret concerning Neptune's manliness.

In the world's oldest university is a stunning 17th century anatomical theater carved from spruce.

Over 100 towers were built in Bologna during the Middle Ages, but only 22 survive.