Chris Moss of Earthenware Landscape Architects designed Soapbox for all those commuters who would like to run, cycle or walk to work but cannot because they have no shower facilities once there.
Each Soapbox features easily-installed units, which could be adapted to each site and which are powered by leaf-shaped solar panels, which also offer shade to the seating area.
The units would collect rainwater from surrounding buildings and its own roof which would be used to shower commuters in the box below. Once used the water flows into a garden container to water the plants which are located next to seating areas, complete with power points and wifi.
Moss said that as well as encouraging people to form healthy commuting habits Soapboxes would encourage people to have lunch or work outside.
"Regular users will also begin to strike up conversations with each other and form new relationships," he said.
Soapbox was voted top out of eight shortlisted projects presented yesterday at a day-long symposium about landscape and health at the Garden Museum in central London, after a series of short presentations about each idea. The day was the third held at the museum to mark Green Infrastructure Week.
A proposal to create two swimming pools fed by the River Thames, London, by Studio Octopi, JCLA and Civic Engineers, the Thames Bath Project was second and in third was Water Boulevards by Baharash Bagherian, Baharash Architecture, which suggested creating a healthy landscape through watery streets which would help mitigate flooding.