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
Commercial district a city is the specific area of either a larger CBD or downtown or separate zone and would typically house a stock exchange or several bank headquarters. Likewise, city centre is sometimes used as a synonym for CBD or downtown, but often the geographical centre of a city not a commercial district. Often the centre of a city in older cities has many historic, institutional, or cultural areas. Most languages do not have a direct cognate for commercial district, but will have a related term such as the French "quartier d'affaires" ("business quarter"), or the Japanese "shōtengai" (literally, "commerce shop