Original sentence: Although Istanbul is the most secularised part of Turkey, large crowds of both Turks and tourists gather at sunset in the park facing the mosque to hear the call to evening prayers, as the sun sets and the mosque is brilliantly illuminated by coloured floodlights.Until the 20th century, however, the sermon was delivered in Arabic, which few in the congregation would have understood
Edited sentence: Until the 20th century, however, the sermon was delivered in Arabic.large crowds of both Turks and tourists gather at sunset in the park facing the Mosque to hear the call to evening prayers, as the Muslims go inside to attend their prayers, tourist watch from outside as the sun sets and the mosque is brilliantly illuminated by coloured floodlights