Restoration efforts took a full three years, and cost Turkey’s General Directorate of Foundations 21 million Turlish Lira (US $ 14.6 million). Work was carried out by a 200-member team composed of architects, artists, calligraphers, art historians, restoration experts, conservators and workers.
One result of the restoration is that the dome of the mosque has now been strengthened to withstand an earthquake registering 8 on the Richter scale thanks to a special cement cleansing technique used on the mosque. There were 256 acoustic cubes discovered in the dome of the mosque, and the restoration also uncovered original pen-work in the hanging pendants that decorate the mosque. Some missing letters from a passage from the Qur’an, which were penned 150 years ago into the main dome, were also replaced by a decision of the restoration board.
Speaking about the restoration, İstanbul Foundations Director İbrahim Özekinci noted that great care and importance had been placed on science and technique during the renewal process on this structure, which was immediately called “magnificent”when it opened and which is considered by many to have been a gift to world architecture from Suleiman the Magnificent. Özekinci noted that the structure continues to maintain its place on the World Heritage List and that as such the Foundations General Directorate had acted with great ambition and determination on this project, with the desire to see the ancient structure protected for future generations to enjoy.
Previous restorations of the Süleymaniye Mosque occurred in 1847-1849 and in the late 1950s/early 1960s. The latest effort began in 2007, and as Özekinci explains: “As a part of this restoration, the entire Süleymaniye Mosque was examined from tip to toe. The actual work began on the domes, with complete replacing of the leading; following this, a team from Istanbul Technical University worked using simulation techniques to determine whether or not the dome was earthquake proof. Then we discovered that the mosque could in fact withstand earthquakes of up to 8 on the Richter scale. There were some small cracks in the domes, which were strengthened. The outside of the mosque was cleaned and protectants put on.”
Özekinci explained one of the most important techniques used in the restoration was the cement cleansing part. He said: “We saw with sadness that in the restoration done in the 1960s, there was cement used rather than the mosque’s original mortar made from lime and brick. Perhaps that was all right for that time, but various analyses, tests and reports indicate that stone structures that have cement placed on top of them do not do well, as moisture and salting problems emerge. So the cement was removed, and finding the correct combination of ‘khorasson’ or lime and brick mortar, we applied this to the structure, and then did our decorative work. The mosque can finally breathe.”
“We did not renew the Süleymaniye Mosque. Ours was a very serious project including conservators, restoration experts, architects and art historians. What was important here was to be able to restore according to the original structure of the mosque. We did not renew, but instead protected and worked according to historical needs and information. In these types of structures, it is vital that they do not lose their historical characteristics. Future generations must be able to see and read these structures for what they are and understand what their various eras have been. So our restoration was really a protective effort that stayed true to the essence of this mosque.”
Özekinci noted that some interesting aspects of the mosque had been re-discovered during restorative efforts. For instance, he said, the mosque’s main dome was found to have 256 symmetrically placed cubes measuring 15 centimeters around the front and 45 centimeters in length.
He explained: “The acoustics in Süleymaniye Mosque are truly incredible. Mimar Sinan used these symmetrically placed cubes with hollow insides to achieve this superior level of acoustics.”
Özekinci also noted the team found much original calligraphic work and that some of the finds were very exciting for both the scientific and art worlds. He also said that the original tiles in the elephant legs had been found after many years.
Noting that the three-year-long restoration was about to come to an end, Özekinci said the mosque would be opening during Eid al-Adha and that it would be ready for people coming to pray. Özekinci also said the surrounding grounds would be next on the docket for restorative efforts and that after permission was received, this aspect of the project would begin.
Sources: IslamToday