The Zincirli Mosque -- "the mosque of the chains" -- was built around 1500 by an Ottoman vizier as part of a small complex that also included a religious school and a public fountain. The name refers to the iron chains that once hung from the dome to support the central chandelier; they were melted down for the Greek war effort during the Second World War.
The building has been neglected for much of the twentieth century but was partly restored in the 2010s. The decorated mihrab and the calligraphic inscriptions on the interior walls are still visible, if faded. Stand outside and look up to see the unusual five-bay portico, an early example of the type that became standard in later Ottoman architecture.