The world's tallest tent has opened to the public in the Central Asian nation of Kazakhstan. Designed by the British architects Foster & Partners, the Khan Shatyr Entertainment Centre in the capital Astana is 150 metres high. <br/><br/>Standing on a 20 metre concrete base, Khan Shatyr is the city's highest structure and the world's tallest tent. <br/><br/>The centre has a huge indoor leisure park, designed to be protected from the region's harsh climate. Inside, visitors will find shops, restaurants and cinemas – even an artificial beach and a running track. <br/><br/>The giant tent, which took four years to build, is designed to withstand harsh weather and maintain a comfortable temperature inside. <br/><br/>It is the latest in an extraordinary building programme that has transformed Astana since it became the Kazakh capital 13 years ago. <br/><br/>The opening of the tent today coincides with the 13th year celebrations of the city becoming the capital and the 70th birthday of President Nursultan Nazarbayev.