Complex sentence: Since Heidelberg is among the warmest regions of Germany, some plants atypical to the central-European climate flourish there, including almond and fig trees; there is also an olive tree situated in the "Gaisbergstraße".
Split into simpler sentences: Since Heidelberg is among the warmest regions of Germany, there flourish some usually atypical plants regarding the central-European conditions. Some of them are for instance almonds and fig trees; there is also an olive tree situated in the "Gaisbergstraße".