The Magic House provides a beautiful and creative environment for curious youngsters to get their knowledge on.

Once one of the world's great cities, Cahokia was a place of religious worship, trade and mass human sacrifice before being mysteriously abandoned.

This titanic oil company sign is a reminder of the Americana boom of the 1970s and also its commoditization.

Less a museum than a bizarre fantasy world created by artists and engineers.

Breathtaking and huge 430 year old maps of Italy.

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

Secret refuge and museum of the Duke of Florence.

This bronze boar's snout has been rubbed to a golden sheen by visitors seeking good fortune.

There aren't too many operational funiculars around, but Pittsburgh has two!

After a water tower painting was accused of being an ad, a simple fix was made that gave the city a motto.

A castle built by an eccentric medieval enthusiast in rural Ohio.