SALT Galata is an arts and research centre inside the 1892 headquarters of the Imperial Ottoman Bank, and the building wears two faces at once. Its architect, Alexandre Vallaury, gave the uphill street a sober European front and turned an ornate, Orientalist facade toward the Golden Horn. You enter through a banking hall built tall and ornate to reassure depositors, then descend to the preserved vaults, where heavy steel doors, safe-deposit corridors and cases of engraved banknotes are left in place.
The bank anchored Bankalar Caddesi, the stone canyon where the empire's money was counted, and SALT reopened the building in 2011. Above the vaults, a research library open to anyone climbs several floors, its reading rooms usually quiet under tall windows. Exhibitions on architecture, society and design rotate through the galleries, and beneath the glass roof of the old banking hall you can simply sit with a coffee. It feels less like a museum than a working archive you are allowed to wander.