The design of Duomo metro station’s mezzanine level establishes optimal connectivity between underground commercial spaces. The station restyling takes place at the very center of Milan, within an infrastructural hub that serves the city as a place of interchange between multiple modes of transport. Positioned between the city and the underground platforms, the concept of the mezzanine is inserted in the cultural world of commercial spaces, rather than in the world of infrastructural necessities and technicalities. The space allows people to experience the new surroundings not only as users of public transport, but also as consumers in the busiest cultural and commercial hub of Milan.