The unique Frog Temple lies at Oel town, 12 kilometres (7.5 mi) from Lakhimpur on the route from Lakhimpur to Sitapur. It is the only one of its kind in India based on Manduk Tantra. It was built by the former king of Oel State (Lakhimpur Kheri district) between 1860 and 1870. It is dedicated to Lord Shiva. This temple is built at the back of a large frog. The Temple is constructed within an octagonal lotus. The architecture of this temple is based on Tantra Vidya.