Maslak "Spine Tower" which reaches a structural height of 202 meters; while the tallest skyscraper currently under construction in Maslak (as well as Istanbul and the rest of Turkey) is the Diamond of Istanbul, which comprises three centrally-connected towers, the tallest of which will have 53 floors above ground and will reach a structural height of 270 meters (thus surpassing the current tallest completed skyscraper in Istanbul, the 54-floor, 261 meters tall Istanbul Sapphire in the nearby Levent business district.) The Diamond of Istanbul will also be the first steel skyscraper in Turkey, where (as opposed to the situation in the
El Dorado Commercial Historic District several blocks extending east along Main Street and south along Washington Street. Most of the commercial buildings are one and two stories in height and are built of brick. Notable exceptions include the Exchange Bank building, which was, at nine stories, the county's first skyscraper, and the eight-story Murphy Oil building. There are more than forty contributing properties in the district. El Dorado Commercial Historic District The El Dorado Commercial Historic District encompasses the historic commercial heart of downtown El Dorado, Arkansas. The city serves as the seat of Union County, and experienced a significant boom in growth during the