Ahar is located on the west bank of the Ganges and is known for its temples dedicated to Shiva and Avantika.

Ahar is identified with the early medieval city of Tattānandapura, which is described in 10 different inscriptions ranging between 867 and 904 CE.

[1]: 135 Six temples are mentioned in the inscriptions: one of Kāñcanaśrīdevī, or Kanakadevī; one of Nandabhagavatidevī; one of Vāmanasvāmin; one of Gandhadevī; one of Daśāvatāra; and one of Sarvamaṅgalā.

These terms are also used in other contemporary sources, so they were probably considered functionally distinct types of streets, but their exact definitions are unknown.

[1]: 139 Archaeological mounds at Ahar cover an area of 3800 acres and span almost a mile and a half in length.

Site B, which is dated to the 9th century, contained such finds as burnt-brick residences, high-quality pottery samples, hand-powered grinding mills, a mortar, an iron scythe, and at least three different varieties of coins.