CITY OF LONDON'S TWENTYTWO OFFICE TOWER TOPS OUT: Twentytwo, the latest high rise in the City of London, became the district's tallest building when it recently topped out, the Council on Tall Buildings and Urban Habitat reported on May 16. Located at 22 Bishopsgate, the 62-story office tower being codeveloped by French investment manager AXA IM-Real Assets and Lipton Rogers now stands at its official height of 278.2 m, higher than its neighbors the Cheesegrater (122 Leadenhall Street, 224 m) and Salesforce Tower (110 Bishopsgate, 230 m). Though the tallest in the Square Mile, Twentytwo does not overtake the Shard, across the Thames, which is 27.8 m taller. The planned 1 Undershaft, not yet under construction, will also be taller, at 290 m.