Completed in 2006, the Kamppi Centre is located in downtown Helsinki. Collaborating with several firms, Juhani Pallasmaa Architects led the design of the 400,000-square-foot mega-structure. It houses a major transit hub below ground, and above, a lively pedestrian plaza, commercial complex, and mixed-use developments.  Photo 4 of 4 in Juhani Pallasmaa on Humane Cities, Monumental Architecture, and the Architect's Role in Society