The city in southwestern Germany which lies in the Upper Rhine Valley between the French Vosges Mountains and the Black Forest to the east, enjoys a pleasant warm climate. Its story begins with a castle (Freiburg – “free castle”) of the Zähringer Duke in 1008. Today the vibrant university town with over 30,000 students is a stronghold in the world for solar energy research and one of the few German cities with a “green” mayor. The picturesque, traffic-free old town with its magnificent cathedral lends itself to a leisurely stroll, to shop or to dine. South of the city the Schauinsland rises, – one of the most beautiful mountains in the southern Black Forest. And a few kilometers north the Kaiserstuhl (Emperor’s Chair), a range of hills where rare plants and excellent wines grow, emerges from the Rhine plains.