The area will be a new public square to rival Trafalgar Square
A London-based architects' firm has won an international contest to design a new £6m square at King's Cross.
The area, bigger than Leicester Square, will complete Network Rail's £500m redevelopment of the station site.
Stanton Williams beat off competition from more than 100 architects. Their final design for the 7,000 square metre site will be announced later.
The redevelopment will bring the Grade 1 listed southern facade of the station back into public view after 30 years.
Alan Stanton, of Stanton Williams, said: "We are very excited to have been selected to work on this project at the heart of the city.
"This is a unique opportunity to create a new public square as part of one of London's busiest transport interchanges."
Rachel Stopard, Camden Council director for culture and environment, said: "The new square will not only form an integral part of the redevelopment of King's Cross, making it one of the largest public squares in London, but will also contribute to our broader vision of a better public realm along Euston Road at the heart of the borough of Camden."
The square will be designed to cope with up to 100,000 commuters, visitors and residents every day. The project is scheduled for completion in 2013.
In addition to the new public square, Network Rail is also investing £1m working with Camden Council on improvements to the local area, including £750,000 to improve the pedestrian access along York Way.
The whole redevelopment is expected to generate over 400 additional jobs.