Ahmet Hamdi Tanpınar Edebiyat Müze Kütüphanesi

It is was used as imperial pavillion but noe it is literature museum.

The Ahmet Hamdi Tanpınar Literature Museum Library (Turkish: Ahmet Hamdi Tanpınar Edebiyat Müze Kütüphanesi) is a literary museum and archive dedicated to Turkish literature and named after the Turkish novelist and essayist Ahmet Hamdi Tanpınar (1901–1962). Located in Istanbul, Turkey, the museum was established by the Ministry of Culture and Tourism and opened on November 12, 2011. The museum is housed in the two-storey Procession Kiosk (Turkish: Alay Köşkü), a 19th-century historic building on the outer walls of Gülhane Park that belongs to Topkapı Palace.

The museum is housed in the two-storey Procession Kiosk (Turkish: Alay Köşkü), a 19th-century historic building on the outer walls of Gülhane Park that belongs to Topkapı Palace.It was used by the Ottoman sultans to accept salute of janissary soldiers parading as well as a pleasure locale. The building is situated across the Sublime Porte.It was used from the 1910s on as the center of the Fine Arts Association.From 1928 to the end 1930s, it served as a meeting place of an association dedicated to Turkish language and literature.

Entrance is free and books is amazing, just visit is OK

Great secret place