 The massive fort built in the plains of Bikaner has a rectangular ( quadrangular ) layout with a peripheral length of 1 @,@ 078 yards ( 986 m ) . The fort walls are 14 @.@ 5 feet ( 4 @.@ 4 m ) wide and 40 feet ( 12 m ) in height . It encompasses an area of 63 @,@ 119 square yards ( 5 @.@ 28 ha ) . It was surrounded by a moat which was 20 – 25 feet ( 6 @.@ 1 – 7 @.@ 6 m ) deep with a base width of 15 feet ( 4 @.@ 6 m ) and top width of 30 feet ( 9 @.@ 1 m ) . However , the moat no longer exists . The fort is well fortified with 37 bastions ( ‘ burj ’ in local language ) and seven gates ( two are main gates ) to counter enemy attacks . The fort was built as a “ new stronghold ” outside of the ruins of an old fort built by Rao Bika and on the periphery of the Bikaner city walls ( 1 @.@ 5 kilometres ( 0 @.@ 93 mi ) from the city centre ) ; the old fort was demolished a century after it was built . 
