Scientific stay at the Columbia University, New York, Sep.-Oct. 2006

At the Rockefeller Center.	At the Rockefeller Center. Playing with sights at the new parabolic mirror.	At the Rockefeller Center. Playing with sights at the new parabolic mirror.	At the Rockefeller Center. Playing with sights at the new parabolic mirror.
At the Rockefeller Center. During the Christmas time you find there the	At the Rockefeller Center. Again playing with the mirror...	The public library. The halls inside - great!	A small garden at the 5th Avenue.
It's no castle! This is a school.	View from the Empire State building. In front the Chrysler building.	View from the Empire State building. The Central Park can be seen in the back.	View from the Empire State building. Some beautiful gardens may be found on