The Bosphorus Villages of Arnavutköy, Turkey. Arnavutköy is a historic neighborhood in Istanbul, famous for its wooden Ottoman mansions and seafood restaurants, as well as the campus of the prestigious Robert College with its centennial buildings.
These trees are rumored to be the inspiration for JRR Tolkien's trees at the Gates of Moria. They are located at Saint Edwards Church, Stow-on-the-Wold, England, supposedly. I definitely see the inspiration.