The challenges of designing the new Acropolis Museum began with the responsibility of housing the most dramatic sculptures of Greek antiquity. The building’s polemical location added further layers of responsibility to the design. Located at the foot of the Acropolis, the site confronted us with sensitive archeological excavations, the presence of the contemporary city and its street grid, and the Parthenon itself, one of the most influential buildings in Western civilization. Combined with a hot climate in an earthquake region, these conditions moved us to design a simple and precise museum with the mathematical and conceptual clarity of ancient Greece.