Heron Tower vs Sapphire of Istanbul

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Salesforce Tower, 110 Bishopsgate (formerly Heron Tower) is a commercial skyscraper in London. It stands 230 metres (755 feet ) tall including its 28-metre (92 ft) mast which makes it the tallest building in the City of London financial district and the third tallest in Greater London and the United Kingdom, after the Shard in Southwark and One Canada Square at Canary Wharf. 110 Bishopsgate is located on Bishopsgate and is headquartered in Camomile Street, Outwich Street and Houndsditch. Construction of the building started in 2007 and has been completed in 2011.

It's owned by Heron International and is still popularly known as Heron Tower, though following a naming dispute in 2014 involving the tenant Salesforce.com that the City of London planning committee made it clear they would rule in favour of the property being officially named 110 Bishopsgate, even though the application was withdrawn before it went to committee. The tower originally struggled to attract tenants at the depths of the Great Recession, but is now fully let.

Source: Wikipedia

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Istanbul Sapphire, or Sapphire, is a skyscraper located in the central business district of Levent in Istanbul, Turkey.

It was Istanbul's and Turkey's tallest skyscraper between 2010 and 2016, and the 4th tallest building in Europe when its construction was finished in 2010. Sapphire rises 54 floors above ground level, and contains an above-ground roof height of 238 meters: the construction has an overall structural height of 261 meters including its spire, which is part of the design rather than a radio antenna. Designed by Tabanl?o?lu Architects, it's a luxury and shopping residence mixed-use development managed by Kiler GYO. It's also the nation's first ecological skyscraper. As of 2020, Istanbul Sapphire is the 4th tallest skyscraper in Istanbul and Turkey, behind Metropol Istanbul Tower 1 (70 flooring / 301 metres including its twin spires) from the Ata?ehir district on the Asian side of the city; and the Skyland Istanbul Towers 1 and 2 (2 x 70 flooring / 293 metres), located adjacent to Türk Telekom Stadium at the Seyrantepe quarter of the Sar?yer district, on the European side.

Source: Wikipedia