Lusail is a new waterfront city (really, an extension of an existing city) planned for a future population of 450,000 at the edge of Doha, Qatar. It has been under construction for almost 20 years, and is perhaps 30% complete, with some phases already open. 

Lusail was the main site for the World Cup in 2022. Hosting over 1.5 million visitors and given widespread coverage in international media, it had the largest stadium (site of numerous matches including the final) and various designated fan zones along major streets and certain sections of the waterfront. 

Hundreds of structures have already been completed and are now occupied. This includes beachfront resort hotels, apartments and condominiums, office buildings, a shopping mall, and a major stadium. Within these buildings, over a hundred restaurants and cafes have also opened. 

Other amenities in Lusail include beaches, an amusement park, a water park, a food truck park, marina facilities, and an extensive network of public open space (various parks and a waterfront promenade) that allows for pedestrian movement. Lusail Boulevard, a major street within the plan, has wide sidewalks and is modelled after the Champs-Elysees in Paris. Significant attention has been paid to landscaping, lighting, public art, and fountains throughout the plan. These features, together with the road system, facilitate movement between various parts of the development. 

A transit system connecting to the rest of the Doha (already operating) and circulating within Lusail (partially built) is also fundamental to the design. Other civil infrastructure includes state of the art and "smart" technologies for power, water, district cooling, sewerage, solid waste disposal, telecommunications, and security systems. 

Numerous sources put the cost of Lusail at approximately $45 billion, making it one of the most significant developments of its type in history. Its pace of construction has also been one of the fastest.