Architects of the Swiss office Herzog & de Meuron renovated a historical museum in Basel, Switzerland, where one of the most important ethnographic collections of Europe is being currently preserved. The renovation process resulted in creation of a new roofing over the museum, which resembles a crown of scales due to its irregular folds clad in blackish green ceramic tiles. Hexagonal tiles, some of them bent and protruded, refract the natural light even when cloudy and create a playful detail. The tiled roof rests on a steel framework and creates a large column-free space suitable for the gallery underneath. The architects expanded window openings and removed one storey in the current building and thus created an additional double-height exhibition area. Access to the the museum was relocated to the rear, where the courtyard is sloped down towards the museum – leading its visitors inside.