A huge triumphal arch marks the entrance of the Galleria Vittorio Emanuele II, which was constructed in 1865 and connects the Piazza del Duomo to the Piazza della Scala. Home to countless chic boutiques, the iron-and-glass arcade designed by Bolognese architect Giuseppe Mengoni soars up to 150 ft. in places and has more to offer than just shopping. At Camparino, for instance, you should treat yourself to a Campari—the drink was invented here.