Bala Quila also known Alwar Fort is a fort in Alwar in Indian state of Rajasthan. It is situated on a hill in the Aravalli Range, above the town of Alwar. The fort is 5 kilometres (3.1 mi) long and is about 1.5 kilometres (0.93 mi) wide. Bala fort was originally constructed by Parmar Rajputs in 928 CE, and appreciated by Nikumbh Rajputs. It was later occupied by Nikumbh Rajputs with ancient hindu belief of goat sacrifice, and invaded in 1492 by Khanzada Alawal Khan.