Funiculars, sometimes called the missing link between trains and elevators, are a popular form of transportation in mountainous areas as they can scale areas of high inclination. This is achieved by attaching carts to cables that are pulled from the end station by enormous engines. Usually, these engines are hidden away from sight, but in the Bergbahn Machinenraum, visitors get a rare glimpse of the inner workings. The second part of the Heidelberger Bergbahn is a historical 1907 funicular that goes up from Heidelberg castle to the peak of the Königstuhl…