Istanbul was conquered by the Ottoman Army on May 29, 1453, under the command of Fatih Sultan Mehmet.
After the conquest, many churches such as Hagia Sophia were converted into mosques. Fatih Sultan Mehmet, who is known for his fondness for art during the conversion of churches into mosques, orders that mosaics and other works of art should not be destroyed and covered with plaster. Istanbul, which has now become the capital of the Ottoman Empire, remains the capital until the collapse of the Ottoman Empire. Ottoman Buildings in Istanbul: You can see many Ottoman artifacts in Istanbul. Among thousands of mosques, imperial buildings, barracks, schools and baths, there are magnificent works such as the Blue Mosque (1616), Süleymaniye Mosque (1557), Topkapı Palace (1465), Rumeli Fortress (1452), Dolmabahçe Palace (1856).