Basilica di San PetronioThe hulking basilica of bologna is Europe's sixth-largest church. Work began on it in 1390, but it was never finished, and its primary facade remains incomplete. Inside, start looking for the massive sundial that stretches 67.7m down the eastern aisle. Produced in 1656 from Gian Cassini and Domenico Guglielmi, this is instrumental in detecting … [Read more...]