Mihrişah Sultan Fountain
Mihrişah Sultan Fountain was built by Sultan III in 1806. It was built by Selim in the name of his mother, Mihrişah Sultan. It is also known as the Küçüksu Pavilion Fountain because it is located within the Küçüksu Pavilion. It is one of the most depicted structures in Old Bosphorus paintings.

The fountain, whose architect is unknown, reflects the transition period between baroque and empire styles. It is a four-faced square fountain with a rectangular plan, almost square. Built by the sea, the fountain has a rectangular base on a three-step platform. The platform that appears today is not original. The corners of the fountain are emphasized by recessed columns with capitals and bases. Its dome, supported by small towers on four sides, is surrounded by wide eaves and these wide stone eaves are raised outwards. The eaves are decorated with empire decorations.
The protruding troughs on two opposite sides are supported by an S-shaped baroque console decorated with acanthus leaves. Akant and seashell motifs can be seen on the keystone and round-arched faucet tray with a slightly deep niche. The facade surfaces except the niche are decorated with abstract branch and flower motifs in low relief technique.
There is an inscription of thirty-two lines in total on four sides of the fountain. The monograms on the wide face of the fountain are from III. It belongs to Selim.
Source Türkiye Culture Portal History of Istanbul