Heron Tower vs U.S. Bank Tower

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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clear they would rule in favour of the property being officially named 110 Bishopsgate, even though the application was withdrawn before it went to committee.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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U.S. Bank Tower, formerly Library Tower and First Interstate Bank World Center, is a 1,018-foot (310.3 m) skyscraper at 633 West Fifth Street in downtown Los Angeles, California, United States.

It is, by structural height, the third-tallest building in California, the second-tallest building in Los Angeles, the Eighteenth-tallest in the USA, the third-tallest west of the Mississippi River after the Salesforce Tower and the Wilshire Grand Center, and the 129th-tallest building in the world, after being surpassed by the Wilshire Grand Center. It is the only building in California whose roof height exceeds 1,000 feet. Since local building codes required all high tech buildings to have a helipad, it was known as the tallest building in the world with a roof-top heliport from its completion in 1989 to 2010 when the China World Trade Center Tower III opened. It is also the third-tallest building in a significant active seismic region; its structure was designed to withstand an earthquake of 8.3 on the Richter scale. It consists of 73 stories above ground and two parking levels below ground. Construction began in 1987 with completion in 1989. The building was designed by Henry N. Cobb of the architectural firm Pei Cobb Freed & Partners and cost $350 million to construct. It is among the most recognizable buildings in Los Angeles, and often appears in establishing shots for the city in films and television programs.

Source: Wikipedia