How do you define a mosque?
A mosque is a building where Muslims go to worship.
there is no grand mosque...many large towns have a grand mosque that heads the smaller ones and some countrys have a grand mosgue to head all mosque in the country..there is no grand mosgue ..most people think the grand mosque is the mosque in mecca but it isn't not...even to is in mecca it don't control all mosque worldwide so there is no grand mosque as in control of all mosque but many mosque called…
The geatest blessings are for praying in the mosque in Mecca. That is where the house built by Abraham is. The next greatest mosque is the mosque of Muhammad, in Medinah. The third greatest mosque is in Jerusalem - where many of the other Prophets were. After that, there is no special distinction given to any mosque.