After the repairs in 1862, 1866 and 1909, it underwent an important repair in the 1960s, as it was understood that the foundations on the Ortaköy stream bed did not have sufficient stability and the building was about to collapse. Reinforcement of the foundation was started with bored piles built on solid ground at a depth of 20 m. In these works, which are known as an important restoration project carried out by the General Directorate of Foundations, the ground was reinforced by using 64 bored piles along the mosque main walls and by injecting 80 tons of cement release. The walls were carved and iron beams were inserted through it, and finally the suspended dome was dismantled and replaced by two thin reinforced concrete shells, one inside and the other outside, in order to obtain the original dome form, and the dome was renewed. Ortaköy Mosque suffered a great fire in 1984 after this major restoration and was repaired again. In summary, the original parts of the mosque have been largely replaced by a renovation, but with its unique location at the entrance of the Bosphorus, it is still one of the pillars of Istanbul's architectural heritage. The mosque consists of two parts, the sanctuary, which is the main place of worship, and the sultan's pavilion, located in front of the entrance, as in all the 19th century sultan mosques. The composition of which both parts are formed is symmetrical, except for the sultan's entrance in the west, according to the north-south axis. The harim section consists of a square planned main space with a canal of approximately 12.25 m and an intermediate space opening to it in the northern part. The intermediate space, which can be thought of as an example of the traditional narthex of Ottoman mosques, is included in the harim, and is covered with a dome on the high body walls. The body walls do not rise up to the level of the dome pulley in the corners, as in the Ottoman mosque tradition. The sultan's pavilion, which can be reached by an elliptical pair of stairs at the north entrance, has two floors. The east and west wings come forward and form a "u" shaped small courtyard in front of the north entrance. even the front volumes of the pavilion level the courtyard and the entrance with a small opening. this arrangement adds depth to the introduction, although it does not contain baroque forms. Sultan's Pavilion consists of east and peace wings that are connected to each other by the entrance hall and the hall above it. There are three spaces that can be passed to each other on both wings. Sultan's entrance is on the west side. this arrangement clearly indicates that the sultan arrived by sea. The entrance is from a three-opening portico, accessed by ten-stepped stairs on both sides. The west wing of the second floor, which is reached by a double-armed elliptical and spectacular staircase, is arranged as the sultan's flat. All three of the three openings forming the body walls are arranged as concave. This unique neo-baroque sign is reinforced at the outer ends of the openings with four columns on each façade, one quarter of which is embedded in the wall. Only the upper half of the columns are grooved on the ground floor, and they are completely grooved on the gallery floor. The ground floor and the gallery floor are separated by a rich moulding set and a caps belt, and the extension of this molding is also combined with the eaves of the sultan's caste. The columns end on the capitals consisting of stylized lotus leaves on the gallery floor. the two columns there are also well marked with additional tables and hills. Amazing 🫶