Atasgah and Yanardag
Atasgah- is a castle-like religious temple in Baku. Based on Persian and Indian inscriptions, the temple was used as a Hindu, Sikh, and Zoroastrian place of worship. "Ātash" 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.
Yanar Dagh- (Azerbaijani: Yanar Dağ, meaning "burning mountain") is a natural gas fire which blazes continuously on a hillside on the Absheron Peninsula on the Caspian Sea near Baku, the capital of Azerbaijan (a country which itself is known as "the Land of Fire"). Flames jet into the air 3 metres (9.8 ft) from a thin, porous sandstone layer.