We are at the graveyard outside the türbe of Mahmut II, along the Divan Yolu shortly before the Çemberlitaş tramway stop.
This is the türbe (mausoleum; I did not enter yet). Mahmut died in 1838 and his türbe is in the then popular Empire style. With him are buried his son and grandson, as well as the sultans Abdül Aziz and Abdul Hamit II, and a large number of imperial consorts and princes. Which makes it all the more curious I never entered (have been in the region a lot for 16 years now).