Kids and would-be inventors will go goggle-eyed at Milan's science museum, the largest of its kind in Italy. It is a fitting tribute in a city where arch-inventor Leonardo da Vinci did much of his finest work. The 16th-century monastery where it is housed features a collection of more than 10,000 items, including models based on da Vinci's sketches, and outdoor hangars housing steam trains, planes and Italy's first submarine, Enrico Toti.
There's also a helicopter flight simulator, in which you can swoop over Milan in a real AW109 cockpit. The museum's fabulous MUST Shop is the place for all manner of science-inspired books, design items, gadgets and games. Access it through the museum or from Via Olona.