Steven Holl Architects - sarphatistraat offices . amsterdam. Sarphatistraat Offices . Amsterdam Steven Holl Architects . photos: © Paul Warchol . + archdaily In Amsterdam, on the Singel Gracht, the renovated building is a four-story brick "U" merging internally with a new "sponge" pavilion. While the exterior expression is one of complimentary contrast (existing brick adjacent to new perforated copper) the interior strategy is one of fusion. The porous architecture of the rectangular pavilion is inscribed with a concept from Morton Feldman's music, "Patterns in a Chromatic Field. " The ambition to achieve a space of gossamer optic phenomena with chance-located color is especially effective at night when the color patches reflect in the De Single Canal. Steven Holl Architects sliced porosity block . chengdu. Sliced Porosity Block - CapitaLand Raffles City. Daeyang Gallery and House. Daeyang Gallery and House: A Conversation with Steven Holl.