The Harihareshwara Temple at Harihar in Karnataka state, India, was built in c. 1223–1224 CE by Polalva, a commander and minister of the Hoysala Empire King Vira Narasimha II. In 1268 CE, Soma, an administrator of King Narasimha III of a similar line made a few increments. The sanctuary houses the god Harihara, a combination of the Hindu Gods Vishnu and Shiva. The picture of the god is a combination of the correct vertical portion of Shiva and left vertical portion of Vishnu.
The picture holds in its correct hand, the traits of Shiva and in the left hand, those of Vishnu. The sanctuary is developed in an amazed square mantapa corridor plan, common of Hoysala developments. Consequently, the external mass of the mantapa demonstrates numerous projections and breaks. The mass of the mantapa is a parapet divider laying on which are half columns that help the external finishes of the rooftop cornice.
The roof of the open mantapa is enhanced with creative design, for example, lotuses. The roof is bolstered by machine turned full columns. The material utilized for the sanctuary is soapstone additionally called potstone. The first overshadow the holy place Vimana is missing and has been supplanted in present day times with one of block and concrete. Protected inside the sanctuary premises are a few old-Kannada engravings and legend stones.