Omrania and Associates (, also known as Omrania, is an international architectural, engineering, and urban planning firm based in Riyadh, Saudi Arabia. Founded in 1973, it specializes in the design of contextual and high-performance design projects. The firm has designed a diverse range of buildings and infrastructure projects in Saudi Arabia, as well as in the Middle East, Europe, and North Africa. Omrania's best-known projects include the Kingdom Centre (Kingdom Tower), the Public Investment Fund (PIF) (formerly Capital Market Authority Headquarters) Tower, and the Aga Khan Award-winning Tuwaiq Palace in Riyadh's Diplomatic Quarter. The firm's most recent high-profile project in development is the King Salman Park in Riyadh, which will become the largest city park in the world. With approximately 500 employees, Omrania has two offices in Riyadh and additional offices in Jeddah and Amman, Jordan. The four office teams include professionals from more than 30 countries. The company is led by a board of directors representing all design disciplines and administration units. History and growth Omrania was founded when architects Basem Al-Shihabi and Nabil Fanous collaborated to win an international design competition for the General Organization for Social Insurance (GOSI) Headquarters in Riyadh. In order to design and supervise the building's construction, they opened a small office that eventually grew into a large, multi-disciplinary practice of Omrania. Since then, Omrania has become a major contributor to Riyadh’s urban expansion, as the capital city grew from 150,000 people in 1960 to 7.6 million by 2017. In 1980, Omrania established a branch office in London, designing international projects such as the Tuwaiq Palace, the Radwa 4 planned community in Yanbu, Saudi Arabia, and the interior renovation of historic Four Millbank in the City of Westminster, London. In addition to designing numerous corporate headquarters, one of the firm's key early projects was the Tuwaiq Palace, a diplomatic club in Riyadh completed in 1985. In collaboration with Buro Happold and Frei Otto, Omrania's design drew from vernacular architectural forms such as the tent and fortification, adapted to the desert climate. Omrania continued to expand its portfolio of mixed-use projects throughout the 1990s. In 1999, in conjunction with Ellerbe Becket, Omrania designed and supervised the construction of Riyadh's Kingdom Centre; a shopping center, hotel, office, and residential complex with a 300-meter (984-feet) tower and skybridge overlooking Riyadh. In the 21st century, the firm has increased its portfolio of urban planning and public space designs.