Why is "Grand" included in Sheikh Zayed Grand Mosque?

The mosque was truly massive and beautiful. As soon as I entered the gate, I was overwhelmed by its magnificent exterior. Passing through the pure white and golden facade, I stepped inside and was astonished by the opulent interior. Was this built purely out of faith? It's incredible to think how people in the past managed to construct such a grand structure. The intense impression left by the mosque's interior still remains vividly in my memory.