After having offered over 2000 guided tours in the timespan of the last about 20 years, I have decided to "retire" from that occupation since July 2016.
From about 1984 to 2016, I have been working in the following workfields:
Please refer to my German language pages for reference
From about 1995 to July 2016, I've been offering guided tours on Vauban district and in our passive house Wohnen & Arbeiten.