Qatar has the world's third largest reserves of natural gas, more than the US or Saudi Arabia. WSJ looks at Lusail, a city built out of the desert sand in 15 years at a cost of $45 billion. With a population of 250,000, it is about 14 miles outside Doha, the capital of Qatar. The World Cup soccer cost Qatar an estimated $220 billion including the cost of building Lusail and the 89,000 spectator stadium in Lusail, a new Metro transportation system, and wide pendestrian walkways, office and residential towers, expressways.