The 150m-high (500 ft) tent has a 200m elliptical base covering 140,000 square meters. Underneath the tent, an area larger than 10 football stadiums, will be an urban-scale internal park, shopping and entertainment venue with squares and cobbled streets, a boating river, shopping centre, minigolf and indoor beach resort. The roof is constructed from ETFE suspended on a network of cables strung from a central spire. The transparent material allows sunlight through which, in conjunction with air heating and cooling systems is designed to maintain an internal temperature between 15-30°C in the main space and 19-24°C in the retail units, while outside the temperature varies between -35 to +35°C across the year.
