Riyadh is the capital and largest city of Saudi Arabia. It is also the capital of the Riyadh Province and the centre of the Riyadh Governorate. Located on the eastern bank of Wadi Hanifa, the current form of the metropolis largely emerged in the 1950s as an expansion of the 18th-century walled town, following the dismantling of its defensive fortifications.
It is the largest city on the Arabian Peninsula and is situated in the eastern part of the Najd plateau. The city sits at an average elevation of 600 meters (2,000 ft) above sea level, and receives around 5 million tourists each year, making it the forty-ninth most visited city in the world and the sixth in the Middle East. Riyadh had a population of 7 million people in 2022, making it the most populous city in Saudi Arabia, the fifth most populous in the Middle East, and the 38th most populous in Asia.
The first mention of the city by the name Riyadh was in 1590, by an Arab chronicler. In 1745, Dahham ibn Dawwas, who was from the neighboring Manfuhah, seized control of the town. Dahham built a mudbrick palace and a wall around the town, and the best-known source of the name Riyadh is from this period, thought to be referring to the earlier oasis towns that predated the wall built by Ibn Dawwas. In 1744, Muhammad ibn Abd al-Wahhab formed an alliance with the Emir of Diriyah, Muhammad bin Saud, and they took Riyadh from Dahham. However their state, now known as the First Saudi state, collapsed in 1818. Turki ibn Abdullah founded the Second Saudi state in the early 19th century and made Riyadh his capital in 1825. However, his reign over the city was disrupted by a joint Ottoman–Rashidi alliance. Finally, in the early 20th century, Ibn Saud retrieved his ancestral rule in 1902 with the Emirate of Riyadh and consolidated his rule by 1926 with the final Saudi conquest of Hejaz, subsequently naming his kingdom 'Saudi Arabia' in September 1932 with Riyadh as the capital. The town was the administrative center of the government until 1938, when Ibn Saud moved to the Murabba Palace. In the 1950s, the walls were dismantled and the Riyadh metropolis expanded as an offshoot of the walled town.
Riyadh is the political and administrative center of Saudi Arabia. The Consultative Assembly, the Council of Ministers, the king and the Supreme Judicial Council are all situated in the city. Alongside these four bodies that form the core of the legal system of Saudi Arabia, the headquarters of other major and minor governmental bodies are also located in Riyadh. Out of the 24 ministries of the Saudi government, 23 are headquartered in Riyadh, further reinforcing its status as the nation's administrative capital. The city hosts 114 foreign embassies, most of which are located in the Diplomatic Quarter in the western reaches of the city.
Riyadh also holds economic significance, as it contains the headquarters of many banks and major companies, such as the Saudi National Bank, Alrajhi Bank, SABIC, Almarai, STC Group, and MBC Group, In addition to its strong local presence, Riyadh has also attracted major international investment. Global companies such as Lenovo, Google, Amazon, Samsung, and Philips have moved their regional headquarters to the city. In total, over 500 foreign companies have relocated their regional bases to Riyadh, reinforcing its growing status as a regional business hub, and Highway 65, known locally as the King Fahd Road, runs through some of these important centers in the city, including the King Abdullah Financial District, one of the world's largest financial districts, the Al-Faisaliah Tower and the Kingdom Center. Riyadh is one of the world's fastest-growing cities in population and is home to many expatriates.
The city is divided into fifteen municipal districts, which are overseen by the Municipality of Riyadh, headed by the mayor, and the Royal Commission for Riyadh City which is chaired by the governor of the province, Faisal bin Bandar. As of July 2020, the mayor is Faisal bin Abdulaziz. Riyadh will host Expo 2030, becoming the second Arab city to host after Dubai in 2020.
On the outskirts of Riyadh is Diriyah, one of the most historically important places in Saudi Arabia and the original home of the ruling House of Saud and the site of At-Turaif Palace, a UNESCO heritage site. Diriyah today is also one of Saudi Arabia's flagship Vision 2030 projects. In the 18th century, Diriyah was the capital of the First Saudi State and is often described as "where Saudi Arabia began."
During the Pre-Islamic era, the city at the site of modern Riyadh was called Hajr (Arabic: حجر), and was reportedly founded by the tribe of Banu Hanifa. Hajr served as the capital of the province of Al-Yamama, whose governors were responsible for most of central and eastern Arabia during the Umayyad Caliphate and Abbasid Caliphate eras. Al-Yamama broke away from the Abbasid in 866 and the area fell under the rule of the Banu Ukhaidhir, who moved the capital from Hajr to nearby Al-Kharj. The city then went into a long period of decline. In the 14th century, North African traveler Ibn Battuta wrote of his visit to Hajr, describing it as "the main city of Al-Yamama, and its name is Hajr". Ibn Battuta goes on to describe it as a city of canals and trees with most of its inhabitants belonging to the Banu Hanifa, and reports that he continued on with their leader to Mecca to perform the Hajj.
Later on, Hajr broke up into several separate settlements and estates. The most notable of these were Migrin (or Muqrin) and Mi'kal, though the name Hajr continued to appear in local folk poetry. The earliest known reference to the area by the name Riyadh comes from a 17th-century chronicler reporting on an event from the year 1590. In 1737, Dahham ibn Dawwas, a refugee from neighboring Manfuhah, took control of Riyadh. Ibn Dawwas built a single wall to encircle the various oasis towns in the area, making them effectively a single fortress city. The name "Riyadh", meaning "gardens," refers to these earlier oasis towns.
The capital of Saudi Arabia, Riyadh, was initially known for its availability of water and fertile land which made it ideal for farming dates and other crops, Wheat was also widely grown until the crops were infested with insects and mites. After Riyadh was designated as the capital in the mid-1900s, Riyadh became a manufacturing hub. Almost one-third of Saudi Arabia's factories are located in Riyadh, producing a range of products including machinery, equipment, metallurgical goods, chemicals, construction materials, food, textiles, furniture, and numerous publications.
In 1744, Muhammad ibn Abd al-Wahhab formed an alliance with Muhammad bin Saud, the ruler of the nearby town of Diriyah. Ibn Saud then set out to conquer the surrounding region with the goal of bringing it under the rule of a single Islamic state. Ibn Dawwas of Riyadh led the most determined resistance, allied with forces from Al-Kharj, Al-Ahsa, and the Banu Yam clan of Najran. However, Ibn Dawwas fled and Riyadh capitulated to the Saudis in 1774, ending long years of wars, and leading to the declaration of the First Saudi state, with Diriyah as its capital.
The First Saudi State was ended by forces sent by Muhammad Ali of Egypt, acting on behalf of the Ottoman Empire. Ottoman forces razed the Saudi capital Diriyah in 1818. They had maintained a garrison at Najd. This marked the decline of the House of Saud for a short time. Turki bin Abdullah became the first ruler of the Second Saudi state; the cousin of Saud bin Saud, he ruled for 19 years till 1834, leading to the consolidation of the area though they were notionally under the control of Muhammad Ali, the Viceroy of Egypt. In 1823, Turki ibn Abdallah chose Riyadh as the new capital. Following the assassination of Turki in 1834, his eldest son Faisal killed the assassin, took control of the capital, and refused to be controlled by the Viceroy of Egypt. Najd was then invaded, and Faisal was taken captive and held in Cairo. However, as Egypt became independent of the Ottoman Empire, Faisal escaped after five years of incarceration, returned to Najd, and resumed his reign, ruling until 1865 and consolidating the reign of the House of Saud.