The Jumeirah Mosque, located in Jumeirah Beach Road, is the only place of worship in Dubai that non-muslims are allowed to enter.
With it's huge central dome and tall minarets, the Jumeirah Grand Mosque is one of Dubai's major attractions.
Unfortunately, I was too late for the guided tour. Tours of the mosque are organized every Saturday, Sunday, Tuesday and Thursday by the Sheikh Mohammed Center for Cultural Understanding. The entrance fee is 10 dirhams or about two euros. Needless to say, men in short pants are not allowed and women are expected to cover their legs, arms and shoulders whilst inside the building.