Children's city is a unique place, in that this is probably the only indoor place in Dubai with lots of scientific and informative articles on display. Things you will loveElectricity and magnetism display : My 3 yo loved completing the circuits and see the lamp glow. You will see circuits, see how moving a magnet in and out can produce electricity among many other thingsMechanical Displays : See levers and gears in action. See Oscillatory motion and play with water guns. There are may other areas like communication ( you can learn to send morse codes in this area), things around us, emirates heritage etc. There is also a movie they play in the Planetarium. How much it costs I think it's 10 or 15 Dhs per head. Mention at the ticket counter that you are going to children city so they don't charge you with a creek park ticket. Once in, go to the Children city building and purchase your ticket from there. This place is a must visit.