If there was one tourist attraction that is absolutely unmissable during your time in Abu Dhabi, that would be the remarkable Sheikh Zayed Grand Mosque. With a capacity that could accommodate a whopping 40,000 people at once — an extent that is equal to the size of four soccer fields — it is the largest mosque in all of the Middle Eastern nation. It is not only the gigantic size of the mosque that is impressive, but also its architectural magnificence. The 82 white marble domes, 1,096 exterior columns, 24-carat gold Swarovski crystal chandeliers and the glimmering reflective pools — all join forces to put together a mind-blowing architectural masterpiece.