Image above:  "Temple of the Sun" in Muhamadra, India
The Sun Temple is a Hindu temple dedicated to the solar deity Surya located at Modhera village of Mehsana district, Gujarat, India. It is situated on the bank of the river Pushpavati. It was built after 1026 AD during the reign of Bhima I of the Chaulukya dynasty. The temple complex has three components: Gudhamandapa, the shrine hall; Sabhamandapa, the assembly hall and Kunda, the reservoir. The halls have intricately carved exterior and pillars. The reservoir has steps to reach bottom and numerous small shrines.

Image below: Kunda, a tank or reservoir which is known as Ramakunda or Suryakunda.
The flight of steps through kirti-torana leads to the reservoir. It is rectangular. It measures 176 feet from north to south and 120 feet from east to west. It is paved with stones all around. There are four terraces and recessed steps to descend to reach the bottom of the tank. The main entrance lies on west.