James Bond ran across Baku's rooftops in “The World Is Not Enough” (1999) — long before F1 took over the same streets.
At Yanar Dag, “the burning mountain”, a natural gas flame has danced non-stop for decades — hence the nickname “land of fire”.
The old city Icherisheher (UNESCO) is best lost in on foot. An eSIM helps: Bolt in Baku, funicular tickets online and the Caspian wind checked before the seafront promenade.