Julius Kühn-Institut (JKI)
Federal Research Centre for Cultivated Plants
76833 Siebeldingen, Germany
Tel: 06345 41 - 0 (Instiute for Grape Vine Breeding)
Tel: 06221 86805 - 00 (Institute for Plant Protection in Fruit Crops and Viticulture)
The closest airport is Frankfurt. But Stuttgart is not far away either.
For more details click on the picture