Hagia Irene Museum

Hagia Irene Museum, located in Istanbul’s Topkapı Palace, is the city’s oldest known Byzantine church, notable for its unconverted status during the Ottoman era and its exceptional acoustics, hosting concerts and exhibitions.

Planning your visit

Hagia Irene is the sleeper of the Topkapi complex. It is the oldest known church in Istanbul, built on the site of a pre-Christian temple, rebuilt by Justinian in the sixth century after the Nika riots, and — uniquely among the city's major Byzantine churches — never converted into a mosque. It fell inside the walls of the Ottoman palace and was used as an armoury, then as a military museum, which preserved it while Hagia Sophia was being transformed around it.

The interior is consequently stripped and austere: bare brick, a great vaulted space, and in the apse a plain black mosaic cross on gold, an iconoclast-period image that survives because no figural decoration replaced it. The absence of Ottoman overlay and Byzantine gilding makes the architecture itself legible in a way Hagia Sophia's does not permit.

The acoustics are exceptional, and the building is used for concerts, including during the Istanbul Music Festival.

It requires a separate ticket from Topkapi Palace, which surprises many visitors. Allow thirty to forty minutes. Bookable options include skip-the-line entry. Current availability is shown below.