Khan Shatyr Entertainment Center in Astana, the capital city of Kazakhstan, is an architectural project that is billed as the world’s largest tent. The “tent” is made of a transparent material and suspended on a network of cables strung from a central spire 150 meters high. The structure has a 200 meter elliptical base enclosing an area of 140,000 square metres. Underneath the tent, an area larger than 10 football stadiums, is an urban-scale internal park, shopping and entertainment venue with squares and cobbled streets, a boating river, shopping centre, mini golf and indoor beach resort. The transparent material allows sunlight through which, in conjunction with air heating and cooling systems, maintains a comfortable internal temperature between 15–30 °C while outside the temperature varies between -35 and 35 °C across the year.