High Quality Content by WIKIPEDIA articles! Heron Tower, also referred to as 110 Bishopsgate, is a skyscraper owned by Heron International in the City of London. It was completed in 2011. It stands 230 metres tall including its 28 metre mast, or 202 metres (663 ft) excluding the mast - making it the tallest building in the City of London and the third tallest building in London as a whole, after 1 Canada Square in Canary Wharf and the Shard London Bridge.