Bikaner is home to one of the only two models of the biplane used by the British during World War I. They were presented by the British to Maharaja Ganga Singh, then ruler of the city. Another unique aspect about Bikaner are the sand dunes that are scattered throughout the district, especially from the north-east down to the southern area. Bikaner is situated in the northern region of Rajasthan. One of the earlier established cities, Bikaner still displays its ancient opulence through palaces and forts, built of red sandstone, that have withstood the passage of time. The city boasts of some of the world’s best riding camels and is aptly nicknamed ‘camel country’. It is also home to one of the world’s largest camel research and breeding farms; as well as being known for having its own unique temple dedicated to Karni Mata at Deshnok, called the Rats Temple.