Heidelberg is a city in south-west Germany. The fifth-largest city in the State of Baden-Wurttemberg after Stuttgart, Mannheim, Karlsruhe
and Freiburg im Breisgau, Heidelberg is part of the densely populated Rhine-Neckar Metropolitan Region.
Heidelberg is a popular tourist destination due to its romantic and picturesque cityscape, including Heidelberg Castle and the baroque style Old Town. Heidelberg Castle is a famous ruin in Germany and landmark of Heidelberg. The castle ruins are among the most important Renaissance structures north of the Alps.