The Baroque palace stands at the corner of a modern block of tenements from 1929 designed by Prague expressionist architect Paul Sydow who cooperated on this luxury residential palace containing a shopping mall and a theatre (today called Divadlo v Dlouhé) with Otomar Sušický. One of the plans with which our studio and the investor approached the modernisation of the entire complex was to preserve the plurality of residential, commercial, and cultural functions. After this modernisation, the seven-storied building offers 67 flats and studios with the area from 50 to 280 square meters. A unique flat was built in the tower in Dlouhá and the adjacent space occupying 600 square meters. Flats on higher stories provide views over roofs of the Old Town to Prague Castle. Flats in Dlouhá Palace were sold as shell & core when a client can influence not only the selection of materials but also the interior layout either completing it by his/her means or selecting one of the three design standards developed by DaM. Residential parking is in the building in an underground car park fitted with an automatic parking system. A Gourmet Passageway is on the ground floor enjoyed by the Prague gourmet community. The idea was to establish a complex concept of quality gastronomy venues offering a wide variety of international and local food emphasising freshness and unique design. In cooperation with the investor, the theatre and its technology were upgraded to meet contemporary parameters.