Photo: Frokor, CC BY-SA 3.0 via Wikimedia Commons
Yanar Dagh is a mountain whose natural gas vents have been aflame for a thousand years, even when it rains. Flames jet into the air from a thin, porous sandstone layer. A large touristy complex with small museum has been built around it, charging almost 5 times the price of 2017.
Yanar Dagh is a natural gas fire that burns perpetually on a hillside on the Absheron Peninsula near Baku, the capital of Azerbaijan, a country known as "the Land of Fire". Flames rise up to 3 metres (9.8 ft) from a thin, porous layer of sandstone.
© OpenStreetMap contributors
Ateshgah of Baku
A fortified religious pentagonal temple located in Suraxanı near Baku. Declared the country's historic-architectural state reserve in 2007. It stems from ancient Indians who moved here and used the natural gas coming from the ground for religious purposes. In the 1960s so much gas and oil extraction had been done that an artificial gas pipe had to be created to feed the fire, which is still burning.
This was built in 1187. The rectangular fortress is 22 m high. Its 76-step tower has two drinking water and 60 food wells. There is a circular tower 500 m away, is known as a "round fortress". It is also called the "Six fortress" after Sheikh Abu Said Abulkheir. It is 12 m high. The Arabic inscriptions on it suggest that it was built by architect Abdulmajid Masud in 1232.
Azerbaijani: Tuba-Şahi məscidi
Built in 1481.
Sumqayit is known for its industrial ruins. It offers some spectacular and picturesque sights, in the middle of which there is sometimes a herd of sheep. Beware of the dogs - if they get too close, pick up a stone (and throw), they will remember the last painful experience and run off.
Last erupted in 2001, but nice for a visit and with a great view.
Отман-Боздаг
Far from the highway, but near the road. Last erupted in September 2018.