Perili Kosk Situated amidst a green backdrop, this neo Classic-style yali dates back to the second half of the 19' century.Built in 1911, the castle-like red brick mansion with stained glass windows is located close to the Fatih Sultan Mehmet Bridge, The popular nickname of the mansion, Perili Köşk (meaning the "Haunted Mansion" in Turkish) refers to its construction remaining partially unfinished for a long period (its second and third floors remained empty for decades.