 A book with many essays by Vittorio Sgarbi, Alberto Bartalini & Franz Jaeger, with photo documentation by "Mario Mulas" brother of the late art photographer Ugo Mulas, about the "Nevrotici Metropolitani" traveling exhibition was published 2008-2009.Christmas 2009, Metzler, has collocated his touring exhibition "Nevrotici Metropolitani" into the "Piazza Basilica Inferiore" in Assisi.In July 2009 in collaboration with Gallery Belvedere Singapore, he designed the sculpture group "Urban People" an exciting and iconic public art installation in the heart of Orchard Road, in front of the ION Orchard and The Orchard Residences in Singapore.