One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

Breathtaking and huge 430 year old maps of Italy.

The crypts of Capuchin friars decorated with the bones of over 4,000 friars, including an entire "crypt of pelvises."

The remains of this 2nd-century Roman temple are incorporated into a modern building.

This unreal Portuguese palace looks as though it's made from a pile of different castles.

A small but very fascinating fountain in the center of Rome with four books and a deer carved.