Contemporary art hall at the Art Museum in Lima (MALI), where the main challenge is one: do not alter the historical environment. To this end, it proposes to arrange the landscape and to build on underground levels. A water mirror, with a geometric and conceptual dialogue, joins the facade of the old museum and reflects it. Below: patios, galleries, library, cafe, etc. The entrance is via a ramp to a courtyard, where a geyser exhales up to street level. The structure is solved through a Bubledeck system.