In the Middle Ages, the construction of great mosques indicated a high level of cultural development and prosperity of a city on the territory of the great Ottoman Empire. The grander they were, the more significant and richer the city was considered. Islam did not allow artists to depict human faces, so the masters had no choice but to direct all their skills to the construction of mosques and the decoration of the interior with amazing elegant elements. The small charming mosques of Izmir are significantly different from the luxurious monuments of Ottoman architecture in Bursa and Istanbul. They combine the features of Byzantine and Turkish art. In total, about 70 mosques were built on the territory of modern Izmir, the largest and most beautiful of which is the medieval Hisar Mosque, located on the square of the same name. The Hisar Mosque with a high single minaret was built in the 16th century and is considered the oldest mosque in the city. The huge dome is supported by eight majestic columns that surround the main prayer hall. The hall has six more large domes and several smaller ones. Such construction visually enlarged the building. It was enhanced even more by an elegant minaret with a small balcony. The central doors of the mosque were decorated with fine openwork ligature, which can be seen today. No less beautiful is the interior decoration of the mosque. The central place is occupied by the Ornate Mihrab, a special niche in the wall that indicates the direction to Mecca. A wonderful garden laid out at its walls and fabulous fountains in the square in front of the mosque give it a special charm. What is more, there is a picturesque caravanserai nearby for tired travelers who want to enjoy oriental sweets after seeing this wonderful monument of Ottoman architecture.