This is the only monument in Sonmarg. Avantipur was an ancient town that existed during the Varman Dynasty. The ruins are actually of two temples built by King Avanti Varman dating back to the years between 883 and 885 AD. The bigger of the two temple is dedicated to Lord Shiva and about 800 metres away from it lies a smaller temple devoted to Lord Vishnu. Both the temples are remnants of the actual structures, however, the smaller Vishnu temple is better preserved than the Shiva temple. The architecture of temples is uniquely Kashmiri, a splendid example of Indian culture and heritage.