On the pedestrian passage between Vezneciler street and Ordu street stands a complex with an elegant sebil, a water kiosk, and a fountain. It was built in 1745 and named after its founder, Grand Vizier Seyyid Hasan Paşa. The sebil and fountain, an excellent example of 18th-century Ottoman baroque architecture, together form the opulent marble façade of the simple stone building behind it that housed a primary school and shops. The sebil, which is located to the left of the door that gives entrance to the building, is much larger and more refined than the modest fountain to its right. Above the door with a round arched opening, there are inscriptions arranged in three cartouches surrounded by a frame with floral motifs. The sebil has five windows covered with intricate metal work and columns with acanthus leaf capitals between them. There are five water supply openings with columns and arches at the bottom. Ten couplets in calligraphy arranged in four lines above the windows of the sebil give the date 1158 (1745). The fountain on the façade to the right of the door is in the form of a niche bounded by a column with fluted capitals on both sides. The ‘C-S’ curved wavy arch on top is filled with a large oyster shell. On the fountain, there is a ‘mâşâallah’ inscription again giving the date 1158 (1745) at the top and a two-line inscription giving the name of its builder underneath.