The Galleria Vittorio Emanuele II is Italy’s oldest active shopping mall and a major landmark of Milan, Italy. Housed within a four-story double arcade in the center of town, the Galleria is named after Victor Emmanuel II, the first king of the Kingdom of Italy. It was designed in 1861 and built by architect Giuseppe Mengoni between 1865 and 1877.

More details: https://en.wikipedia.org/wiki/Galleria_Vittorio_Emanuele_II