Flame Towers is a trio of skyscrapers in Baku, Azerbaijan, the height of the tallest tower is 182 m (597 ft). Towers representing flames symbolize fire as a sign of Ahura Mazda in Zoroastrianism by Azerbaijanies and Azerbaijan as a birthplace for the prophet Zoroaster.

Ateshgah of Baku is a castle-like religious temple in Surakhani town (in Suraxani raion), a suburb in Baku, Azerbaijan. The Baku Ateshgah is often called the "Fire Temple of Baku". Based on Persian inscriptions, the temple was used as a Hindu, Sikh, and Zoroastrian place of worship. "Atash" is the Persian word for fire.

Palace of the Shirvanshahs is a 15th-century palace built by the Shirvanshahs. The complex contains the main building of the palace, Divanhane, the burial-vaults, the shah's mosque with a minaret, Seyid Yahya Bakuvi's mausoleum (the so-called "mausoleum of the dervish"), south of the palace, a portal in the east, Murad's gate, a reservoir and the remnants of a bath house.

Old City is the historical core of Baku, the capital of Azerbaijan. The Old City is the most ancient part of Baku, which is surrounded by walls. In 2007, the Old City had a population of about 3000 people.

Baku is the capital and largest city of Azerbaijan, as well as the largest city on the Caspian Sea and of the Caucasus region. Baku’s 2020 population was 2,293,700. Baku is located 28 metres (92 ft) below sea level, which makes it the lowest lying national capital in the world and also the largest city in the world located below sea level.