King Khalid International Airport — Riyadh, Saudi Arabia

Spanning an enormous footprint of desert land north of the Saudi capital, RUH ranks among the largest airports in the world by land area, with much of that space reserved for future expansion. Opened in 1983 and named for King Khalid bin Abdulaziz, who reigned over Saudi Arabia through much of the 1970s, the airport is best known for its striking Royal Terminal and the large mosque built into the main passenger complex, its minaret visible across the grounds. RUH serves as a primary hub for Saudia, the national carrier, alongside a growing roster of international airlines expanding service to Riyadh as the kingdom pursues an aggressive tourism and business diversification agenda under Vision 2030. Riyadh has grown into a major financial and administrative center for the Gulf region, and RUH's expansion plans aim to support ambitions of becoming a significant global connecting hub in the years ahead.