Were Anadoluhisarı and Gül Mosque in Istanbul both constructed by the Ottomans?
Anadoluhisarı Anadoluhisarı (English: Anatolian Castle ), which is historically known as Güzelce Hisar (meaning "the Proper Castle") is a fortress located in Istanbul, Turkey on the Anatolian (Asian) side of the Bosporus, which also gives its name to the quarter around it in the Beykoz district. It was built between 1393 and 1394 by the Ottoman sultan Bayezid I "The Thunderbolt" as part of his preparations for the Second Ottoman Siege of Constantinople, which took place in 1395. Sultan Bayezid built it on the ruins of a temple of Uranus Originally named Güzelcehisar (Turkish: "Beauteous Castle" )
Karahisar Karahisar (former Karaasar) is a town in Tavas district of Denizli Province, Turkey. It is situated at along the Akçay creek, a tributary of Büyükmenderes River (historical "Maeander"). The distance to Tavas is 10 km . The population of Karahisar was 3403 as of 2012. The settlement was founded in 1530s by Turkmens. The earlier name of the settlement Karaasar probably refers to Kara Fatma, the wife of the tribe. Gülfem one of the concubines of Suleyman I, the Ottoman sultan (also called the Magnificent) commissioned a mosque and a fountain in the settlement. In 1954 the settlement was declared a seat of township.