Heidelberg & Neckar
The Neckar links two distinct cities in Baden-Württemberg: Stuttgart, the state capital in its valley location, with the river flowing through its northeast, and Heidelberg, where it exits the Odenwald into the Upper Rhine Plain. Heidelberg's castle ruin above the old town attracts, according to its administration, around a million guests annually.Here, experience the romance of Germany's oldest university city, alongside car city Stuttgart with its Mercedes-Benz and Porsche museums. Stuttgart's vineyards reach right into the city centre, and Wilhelma in Bad Cannstatt ranks among Germany's most visited zoos.