The project for the new Queen Elizabeth Olympic Park includes a new plaza in the south of the Park in the area between ArcelorMittal Orbit, the aquatics centre and the stadium.
"The South Plaza will be a dynamic landscaped area dedicated to entertainment and cultural activities, offering new experiences for each visit," said a spokeswoman.
The space, occupied by temporary cafes, shops and loos during the games, will form an 11.3ha plaza and park equivalent to 16 football pitches.
"It will contribute to the London Legacy Development Corporation’s plans to double the open space inside Queen Elizabeth Olympic Park in comparison to Games-time."
James Corner Field Operations, the US landscape architect responsible for the High Line in New York designed the Plaza with plantsman and designer Piet Oudolf.
"Piet has designed a five metre ribbon of perennial planting to edge each of the Plaza’s features. The backbone of the South Plaza will be a 12m wide tree-lined promenade, opening onto a series of outdoor rooms.
"They include an interactive ‘labyrinth’ fountain, a classic carousel, a space for impromptu performances, a music room and a play space with climbing wall descending to the canal-side. There will also be a park hub with cafe, box office and roof-top pavilion."
The South Park is due to open in spring 2014, following the phased opening of the North Park from 27 July 2013, exactly one year after the Opening Ceremony of the Olympic Games.
Mayor of London and chairman of the corporation Boris Johnson said: "Not only will the South Plaza form an integral part of the new community. It will draw millions of visitors."