Housed in in the old Post Office building is the Museo de la Gastronomía Peruana or Casa de la Gastronomía Peruana.
This museum is focused on history of the preparation and marketing of the various national dishes in times of yesteryear till today.
Don't miss example the explanation of how Pachamanca is made in the Andean mountains or the modern Pollo a la Brasa stand (Peruvian Charcoal Chicken)