Idrocronometro

Elaborate 19th-century water clock in the Vatican Gardens – a technical curiosity with four clock faces powered by water pressure.

The Idrocronometro in the Vatican Gardens is an elaborate 19th-century water clock. The pyramid-shaped wood-and-iron structure with four clock faces tells the time using water pressure. It is a charming technical curiosity within the Vatican's extensive garden grounds, quietly attesting to the popes' interest in science and technology.