The City of London Corporation has released a series of images showing how the Square Mile's skyline will develop between now and 2026 - including views from Waterloo Bridge, the South Bank and City Hall.
"It is unprecedented to see such a scale of development taking place at one time in the Square Mile," said Chris Hayward, planning and transportation committee chairman at the City of London Corporation.
"There are now more cranes in the City sky than in recent decades.
"The City's occupier base is becoming more dynamic, with SMEs and media companies choosing the Square Mile as their home.
"I am particularly proud that we are able to make available economically inclusive spaces with free public viewing galleries in City skyscrapers.
"Over the next thirty years I expect that we will need to deliver office space for up to 100,000 extra City workers. Therefore iconic buildings such as TwentyTwo will lead the way in ensuring the City remains competitive as a leading financial centre."