Festival celebrates London's story in 100 events
About 100 events, including special guided tours and workshops, will be held across the capital as part of a cultural festival to celebrate London.
The Story of London, in its second year, will run from 1 to 10 October and give people access to places like the Crossness Pumping Station in Bexley.
Mayor Boris Johnson, Sir Richard Sykes and Lord Professor Winston launched the event at the Royal Institution.
About 500 events were held in 2009 but it was criticised for lack of planning.
A Jimi Hendrix exhibition at Handel House, guided walks around Dagenham docks and debates about the banking sector and the 2012 Olympics are some of the events at the festival.
The Heritage Lottery Fund, English Heritage and Renaissance London have teamed up with the mayor.
London Mayor Boris Johnson said: "From Faraday to Chaplin to Westwood, London continues to be at the forefront of ideas and ingenuity, playing a crucial role in every sphere of human activity.
"Think of our cycle hire scheme, the developments around the Olympic Park and at King's Cross, and the exciting proposals for a Green Enterprise District in Docklands - our city is always looking forward, its adventurous spirit a key factor for its enduring success."
Prof Jack Lohman, director of the Museum of London, said: "The Museum of London will display dramatic images of a London affected by climate change.
"They bring home the full impact of global warming, food scarcity, rising sea levels and how all Londoners will need to innovate to survive."
Last year Liberal Democrat assembly member Dee Doocey said the month-long programme was "not properly planned" and there was a low interest in tickets.