Baku, surrounding Absheron and larger Historical Shirvan (not the modern Shirvan) area is a historically rich place with a lot of ancient mosques, madrasas, burial places with scripted tombs etc.
A tomb in the historical place locally known Yeddi Gunbez (near Shamakhi city)
Mud Volcano near Gobustan
Ancient Rock Art in Gobustan
Some places are documented only in academic research papers which are not so known and read within the general audience.