h/t Kindltot on A♠
These rare color views of the capital (then known as Constantinople) of the Ottoman Empire at the close of the 19th century were produced using the Photochrom process. The technique applies layers of artificial color to a black and white image with surprisingly realistic results.
A great variety of landscapes, cityscapes, and street life.
More information and more pictures:
Rare Historical Photos
They Might Be Giants — Istanbul (Not Constantinople) [2:35]
featuring WB Tiny Toons cartoon