The king's religious perceptor was Bhava Brihaspati, who originally lived in Malwa, and had been brought to Gujarat after Jayasimha's victory over the Paramaras. Jayasimha either renovated or rebuilt the Rudra Mahalaya Temple at Siddhapura (modern Siddhpur). It was the greatest temple of his period, of which only some pillars, shrines and arches survives today. It was completed in 1142 CE. He renovated a lake built by his ancestor Durlabha in Patan, and named it Sahastralinga (1000 lingas). The lake was surrounded by 1008 small shrines, each of which housed a linga (symbols of Shiva). Jayasimha diverted the flow of the entire Saraswati River into the lake. Many artificial islands were created on which many temples, palaces, and gardens were built. On the banks of this lake were thousands of temples to Shiva. Apart from these, there were 108 temples to Devi, Yagnashala and Matha for pupils. Jayasimha invited 1001 Brahmans from Varanasi at the time of the renovation of Sahastralinga lake; their successors are known as Audichya Brahmin. There is a legend of Jasma Odan associated with the lake who had cursed Jayasimha to remain childless. According to Jain sources, he also built Siddhavihara at Siddhpur. The stepwell in Dhandhalpur is also ascribed to Jayasimha Siddharaja. His mother Mayanalladevi is credited for building lakes at Viramgam and Dholka. The Minal stepwell in Balej village in Sabarkantha district are ascribed to her and was built in 1095 CE. A stepwell in Nadiad and Minaldevi Vav in Virpur in Rajkot district are also ascribed to her and has stylistic affinities to Chaulukya architecture. The fort of Jhinjhuwada with its well-carved gates as well as the five kunds at Sihor were built during his period.