Moroccan riad been bought by foreigners. This foreign interest has brought new challenges but the investment has helped with the restoration of the UNESCO site and has helped revive many of the handcrafts and artisan trades that were gradually being lost before this trend. Many of the restored riads in the districts of Mouassine and Lakssour offer the finest examples of restoration as historically these areas contained many of the grand palaces from Marrakech's Saadian period. Moroccan riad A riad () is a type of traditional Moroccan house or palace with an interior garden or courtyard. The word riad originates from the
Courtyard housing the publication of the book "Courtyard Housing in Los Angeles" by Roger Sherwood, James Tice and Stefanos Polyzoides as well as to suit a contemporary need for a housing typology with a density level between that of a single or double family house and that of a traditional higher-density apartment building. In 2007, the City of Portland Planning Bureau held a design competition for new designs based on the courtyard housing model for new infill housing in existing neighborhoods. While courtyards have been a part of buildings for millennia, courtyard housing in this sense does not refer merely to any