I found a sketch at this page, reminding about David Hockney and think it could really be a nice element in presenting projects. http://publicspace.org/en/works/g184-tres-places
I found this project from Modena (2010) interesting, to offer different public use of this chair/table, suitable as working place with laptop as it’s connected to wifi. A flexible and inviting way to make people use the public spaces.
A public service of Internet-connected movable chairs brings new life to the historic centre of the city.
Soo Sunny Park is an artist working with large installation, working with space. On her webpage: http://www.soosunnypark.com she has many sketches and model of her work showing the material and the thought.
Article by James Hall, Guardian and photos from Mereleis retrospective at Tate Modern.
Urban Public Space is an initiative of the Centre of Contemporary Culture of Barcelona (CCCB). It’s EU founded and a platform for discussion about the process of rehabilitation of public spaces that has been occurring in many European cities.
Urban Library have a selection of texts on art and public space. There are much information on public space, from many angles.
I found a text from Zygmunt Baumann http://www.publicspace.org/en/text-library/eng/b015-archipelago-of-exceptions that I would like to come back to,