The whole building is wrapped in carvings of vines, flowers and leaves. Look closely at the walls and you'll see tulips, roses and morning glories made out of tiny stones - that's a craft called pietra dura, where coloured stones are cut and fitted together like a jigsaw to make pictures. The flower patterns come from all over the world.
Inside, on the main floor, lies the world's largest hand-knotted carpet. It is the size of a football pitch and was woven by a team of about 1,200 carpet-makers in Iran. There are over two billion tiny knots in it. The pattern matches the patterns on the walls so the whole room feels like one giant flower garden.
Seven enormous chandeliers hang from the ceilings. The biggest weighs as much as ten cars and is decorated with millions of tiny crystals. When the lights are on, they bounce off all that white marble and make the inside glow gold.
The mosque is open to visitors from any country and any background. People come simply to look up at the domes, walk on the cool stone, and stand quietly inside. It is named after the man who founded the United Arab Emirates in 1971 - Sheikh Zayed bin Sultan Al Nahyan.