Basilica di San Petronio in Bologna , Italy - the most important church in Bologna, the fifth largest church in the world. See the sundial by Gian Domenico Cassini, which demonstrate that the Earth moves around the sun.
The two towers of Bologna, Italy. In the & centuries, hundreds of these towers were built in various parts of Italy. The city of Bologna had up to however, now fewer than 20 remain. And we thought skyscrapers were a century invention.