 Between the main gate and the palace , there is a quadrangle , and then another gate called the <unk> gate ( triple gateway ) before accessing the royal chambers . Next to this gate is a small temple called the Har Mandir , where the Royal family used to offer worship . In the quadrangle , which houses a large pavilion with a water pool built in Carrara Italian marble . The Karan Mahal , where public audience was held in the Diwan @-@ i @-@ Am by Karan Singh ( 1631 – 39 ) and his successors till the 20th century , can also be seen in the same quadrangle . 
