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
Ashtabula Harbour Commercial District City ordinance forbids exterior alterations to buildings in the federally designated district unless the owner has first completed a process of gaining approval from the city's historic preservation review board. Ashtabula Harbour Commercial District The Ashtabula Harbour Commercial District is a historic district in the northern section of the city of Ashtabula, Ohio, United States. Comprising a commercial section near the city's Lake Erie waterfront, the district includes buildings constructed largely in the late nineteenth century, at which time Ashtabula was a flourishing port city. Most of the buildings in the district were constructed between 1865 and 1878, although occasional