Duplex is a term used to refer to apartments that are laid out over two floors connected by an inner staircase. In some regions duplexes are also called maisonettes. In some newer designs of duplex apartments there is a mezzanine level offering a smaller living space on the upper-level that overlooks the larger lower-level space, which instead has a higher than usual ceiling level, creating a feeling of spaciousness due to the large open space.
Al Rayyan municipality is the third largest in Qatar. The capital of Al Rayyan is a district of the same name: Al Rayyan City which is comprised of two districts Old Al Rayyan and New Al Rayyan. It is bordered to the north by the municipalities of Al Shahaniya and Umm Salal, to the east by Doha and to the south by Al Wakra. It comprises two main components, its capital: Al Rayyan City which is the western part of the Metropolitan Doha urban area and the extensive suburbs of Al Rayyan which collectively hold the largest total population outside of Doha. The majority of urban development and approximately 85% of the population of the municipality is concentrated within Al Rayyan City. This major urban overspill from Doha municipality has resulted in the rapid development of housing to meet the demand for homes to rent in Al Rayyan and its districts. In recent years residential compounds have been constructed to meet the housing needs of families seeking homes to rent in Qatar close to International schools, of which there are plenty to choose from in Al Rayyan.
Al Rayyan is also home to a number of mega projects in Qatar including Education City (a 12 square kilometre site and home to 9 Universities, Qatar Foundation and Qatar National Library) as well as Aspire Zone (Khalifa Stadium and Aspire Tower) and Al Waab City. Sidra Medical Centre and Research Centre in Al Gharrafa have raised the healthcare standards of the area. The municipality is also known for the first-ever specialised Orthopaedic and Sports Medicine hospital (Aspetar) in the Middle Eastern region receiving visitors from all over the globe. Aspetar was accredited as a FIFA Medical Centre of Excellence over 10 years ago and provides the highest possible medical treatment for sports-related injuries in a state-of-the-art facility, staffed by some of the world's leading sports medicine practitioners and researchers.