The Museo de la Ciudad is a modern museum with displays showing the development of Madrid from the earliest times with the help of models. There are displays covering prehistory and models of Madrid during the different periods. Exhibits include explanations of infrastructures such as water, sanitation, electricity, telephones, airports and public transport. There are models of buildings such as the Palacio Real and the bullring as well as photographs, maps, objects such as clocks and audio-visual presentations.