Basilica of Sant'Eustorgio

Milan's Basilica of Sant'Eustorgio is one of the city's oldest churches, founded in the 4th century. It's also one of the most important, as it contains the relics of three saints: Eustorgio, Gervasius, and Protasius. The basilica's facade is a mix of Romanesque and Gothic styles, and the interior is equally impressive, with its high ceilings and beautiful stained-glass windows.