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
Star City Commercial Historic District since their construction. Minor changes generally involve changes to store fronts, such as the boarding over of transom windows, the replacement of recessed entries with flush ones, and changes to the fenestration. The building at 108 Jefferson, built in 1927 to house a bar, has been extensively remodeled and does not contribute to the district's significance; the Star Theater building at 212-214 Bradley has also been extensively altered. The district was listed on the National Register of Historic Places in 1999. Star City Commercial Historic District The Star City Commercial Historic District encompasses the historic commercial center of Star City,