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 called an "impluvium". These homes frequently incorporated a second open-air area, the garden, which would be surrounded by Greek-style colonnades, forming a peristyle. This created a colonnaded walkway around the perimeter of the courtyard, which influenced monastic structures centuries later. Courtyard houses in the Middle East reflect the nomadic influences of the region. Instead of officially designating rooms for cooking, sleeping, etc., these activities were relocated throughout the year as appropriate to accommodate the changes in temperature and the position of the sun. Often the flat rooftops of these structures were used for sleeping in warm weather. In some Islamic