Great place to worship, only prayed once as I was traveling in the area. Beautiful prayer area, with upstairs balcony for sisters. Water fountain in lobby. Has underground parking, and the grounds are gated. Institute also contains a school, but I only saw the prayer area.

This place is one of those places that I love going to! If I had the opportunity to move to Daimond Bar, I would just because of this one reason. Everyone in the institute is so friendly and kind. They teach well and set up a nice environment for students and worshipers. I would give this place ten stars if I could. Definitely try going there.

Bismillah. Asalamu Alaikum warahmatullahe wabarakatuhu! My children and I have been attending IOK for a while now Alhamdulilah! We are always treated there with respect, dignity and honor! I see the dedication, determination and the constant striving in the faces of all the Staff and they do it all with smiles! We attend many programs there including seminars and lectures. We are very honored and very greatful to know that we are always welcome there as we strive together towards a common goal, Jannatul Firdaus! May ALMIGHTY ALLAH make us all neighbors of prophet Muhammad aleyhe salaam. Jazakumullahu khairan.

Worm and inviting feeling. Very knowledgeable of Islam and everyone is cheerful and ready become a frined. I am a regular every Friday. Must experience to see what I mean.oh , and everyone speaks English.

IOK is very organized and the people are kind and respectful. The community is active. They run multiple activities, including a full-time Islamic school and Saturday school.