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Modern history

From the 1940s, Riyadh mushroomed from a relatively narrow, spatially isolated town into a spacious metropolis. When King Saud came to power, he made it his objective to modernize Riyadh, and began developing Annasriyyah, the royal residential district, in 1950. Following the example of American cities, new settlements and entire neighborhoods were created on grid plans, and connected by high-capacity main roads to the inner areas. The grid pattern in the city was introduced in 1953. The population growth of the town from 1974 to 1992 averaged 8.2 percent per year.

On 16 November 1983, King Khalid International Airport was officially opened by King Fahd, in memory to the late King Khalid. It remains the biggest airport in the world at nearly 300 sq miles to date.

Al-Qaeda under Osama bin Laden launched coordinated attacks on compounds in Riyadh on 12 May 2003, resulting in the deaths of 39 people. The bombings were considered to be a terrorism campaign against Western influence in Saudi Arabia.

In 2010, the first Saudi capital Diriyah, on the northwestern outskirts of Riyadh was inscribed as a World Heritage Site by UNESCO.

The mayor is Prince Faisal bin Abdulaziz al-Muqrin. Al-Muqrin was appointed in 2019 by royal decree and succeeds Tariq bin Abdul Aziz Al-Faris. Riyadh is now the administrative and to a great extent the commercial hub of the Kingdom. According to the Saudi Real Estate Companion, most large companies in the country established either sole headquarters or a large office in the city. For this reason, there has been significant growth in high-rise developments in all areas of the city. Most notable among these is King Abdullah Financial District which is fast becoming the key business hub in the city. Riyadh also has the largest all-female university in the world, the Princess Nora bint Abdul Rahman University.

According to the Global Financial Centres Index, Riyadh ranked at 77 in 2016–2017. Though the rank moved up to 69 in 2018, diversification in the economy of the capital is required in order to avoid what the World Bank called a "looming poverty crisis" brought on by lingering low oil prices and rich state benefits.

Since 2017, Riyadh has been the target of missiles from Yemen. In March 2018, one person died as a result of a missile attack. The number of missiles which targeted Riyadh are a small portion of the dozens of missiles fired from Yemen at Saudi Arabia due to the Saudi Arabian-led intervention in Yemen. In April 2018, heavy gunfire was heard in Khozama; this led to rumors of a coup attempt.

A restoration of heritage buildings of historical significance was launched in Riyadh by Crown Prince Mohammed bin Salman on 13 September 2020.