Taragarh Fort is located atop the Nagpahari Hill in Ajmer. Often considered as the first hill fort of Asia, it is also known as the Fort of Ajmer. It was constructed at a time when the Aravalli mountain ranges were above the snowlines.Built by King Ajaypal Chauhan on the pinnacle of Taragarh Hill, overlooking Ajmer, it has the reputation of being one of the oldest hill forts of the world. It is often called as the Star Fort, dating back from the 12th century.Situated 3 km and a steep 1.5 hours climb beyond the Adhai-din ka Jhonpra Mosque, the fort offers an aerial view of the entire city. Built in the year 1100 A.D by Ajaypal Chauhan, the towns founder, the fort was the site of military activities during Mughal times. Lakshmi Pol, Phuta Darwaza and Gagudi ki Phatak are the three gateways of the fort. Bhim Burj that acts as a crenellation and support for the canons is amongst the highlights of the fort. The fort also contains many reservoirs, carved out of the solid rock.