Sheikh Zayed Mosque 3d model

Next step is to create the Entrances of the mosque. Started with the entrance of the courtyard.

I used the shape form the walls around the courtyard. I duplicated it 3 time and made the shape in the middle bigger. Then selected the edges and extruded them to get the shape around the openings. Then I extruded the edges forward and them I bridged the walls in between the openings. I copied the wall I created and pasted it on the other side and them bridged it in between.