The United Arab Emirates' capital is a very cool, slick and modern capital city. The city of Abu Dhabi sits at the head of a T-shaped island jutting into the Gulf off the central western coast of the UAE. If you are a sun-worshipper and need a quick heat fix, Abu Dhabi is the place for hot summer sunshine, in a modern city environment. The Al-Hosn Palace, commonly known as the Old Fort or the White Fort, is the city's oldest building in a city of big, new structures. The Corniche is a beautiful grass promenade, which is maintained by desalinated and reclaimed water, like all the city's 20 parks.