Sheikh Zayed Grand Mosque ~ the third largest mosque in the world! Built in honor of Zayed bin Sultan Al Nahyan, the founder of the UAE, the entire mosque cost $5.5 billion, with tens of thousands of gem shells inlaid, and a Slovak crystal chandelier worth $800,000 perpiece. There is also the world's largest handmade carpet, the entire complex is wrapped in Han white jade from Greece, white and elegant appearance, lined under the blue sky, looks particularly solemn.