The Baku Ateshgah (from Persian: آتشگاه‎‎, Atashgāh, Azerbaijani: Atəşgah), often called the "Fire Temple of Baku" is a castle-like religious temple in Surakhani, a suburb in Baku, Azerbaijan. Based on Persian and Indian inscriptions, temple was used as a Hindu and Zoroastrian place of worship. "Atash" (آتش) is the Persian word for fire. The pentagonal complex, which has a courtyard surrounded by cells for monks and a tetrapillar-altar in the middle, was built during the 17th and 18th centuries. It was abandoned after 1883 when oil and gas plants were established in the vicinity, ending the flow of natural gas to the temple and extinguishing the holy fire.