Therefore Cologne only premitted a limited number of attendees of 500 invited guests to the inauguration. The inauguration of the mosque in September 2018 during the state visit to Germany by the Turkish President Recep Tayyip Erdoğan was controversial as the Turkish-Islamic Union for Religious Affairs neglected to provide a satisfying security concept for the event. A plan welcomed by then mayor of Cologne Fritz Schramma to build shorter minarets was dropped after the architects said the plan would leave the minarets out of proportion with the rest of the building and surrounding structures. the restaurant, event halls and stores) be open to people of all religions. The developers have required that the secular areas of the mosque (e.g. According to the architect, openness is further enhanced by an inviting staircase from the street.

It also has glass walls, which according to DİTİB spokesman Alboga gives visitors a feeling of openness. The mosque consists of flat-like wall screens which form a dome in the centre. A well is placed in the centre to connect the two levels and create a pleasant atmosphere. The mosque has the bazaar and entrance on the ground floor, lecture halls in the basement, the prayer area on the upper floor and include a Muslim library. It has a main hall of 36.5 meter, and two 55 meter high minarets. The mosque is in the Ottoman architecture style. The architects of the mosque are Gottfried Böhm and his son Paul Böhm, who specializes in building churches. Theodore Catholic Church has also decided to fundraise for the mosque. The mosque is funded by Diyanet İşleri Türk İslam Birliği (DİTİB), a branch of the Turkish government's religious affairs authority, bank loans, and donations from 884 Muslim associations. The 48,000-square-foot (4,500 m 2) mosque cost £15–20 million to build, aiming to house 2,000 to 4,000 worshippers. As the mosque will be one of Europe's biggest mosques, and the largest mosque in Germany, it has been criticized by some, particularly for the height of the minarets. The mosque is proposed to have a bazaar as well as other secular areas intended for interfaith interactions. The mosque is designed in neo-Ottoman architectural style, with glass walls, two minarets and a dome. After controversy, the project won the approval of Cologne's city council.

This mosque was inaugurated by Turkish President Erdogan. The Cologne Central Mosque ( German: DITIB-Zentralmoschee Köln, Turkish: Köln Merkez-Camii) is a building commissioned by German Muslims of the Organization DİTİB for a large, representative Zentralmoschee (central mosque) in Cologne, Germany.

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