The Botanical Garden is situated in the vicinity of vineyards on a limestone slope facing south-east. This allows a multifaceted structuring of the area into different thematic divisions. Generally, most of them are designed according to geographical units, e. g. forests or meadows representing typical plant communities. Favorable climatic conditions with dry and hot summers allow cultivating communities originating from Southern Europe and the Mediterranean area. Other thematic divisions, for example, present collections of medicinal plants, crops and an arboretum. A special collection with about 200 species is related to Philipp-Franz von Siebold, who was born in Würzburg in 1796 and substantially contributed to the botanical exploration of Japan.