Train of cogwheel railway at Schynige Platte, Jungfrau Region, Bernese Oberland, Switzerland

Scenery of cogwheel railway, Schynige Platte, Jungfrau Region, Bernese Oberland, Switzerland

Aerial shot of Brienz Rothorn Railway (Switzerland's oldest cogwheel railway) and Lake Brienz, Brienz, Bernese Oberland (highlands), Canton of Bern, Switzerland

Train Jeanne Tramway du Mont Blanc rides through the forest Haute-Savoie France

Final station Le Nid d'Aigle of Tramway du Mont Blanc with train Haute-Savoie France

Santa Laura Saltpeter Works, UNESCO World Heritage Site, Atacama Desert, northern Chile, Chile, South America

Rusty cogwheel, gearwheel, detail

Landschaftspark Duisburg-Nord park, Duisburg, North Rhine-Westphalia, Germany, Europe

Ride on the Brienz-Rothorn-Bahn rack railway on Mt. Brienzer Rothorn, Bernese Oberland, Switzerland, Europe

Wendelstein railway, cogwheel railway, Brannenburg, Upper Bavaria, Bavaria, Germany, Europe, PublicGround

Landschaftspark Duisburg-Nord park, Duisburg, North Rhine-Westphalia, Germany, Europe

The Incline Railway approaches the station atop Lookout Mountain in Chattanooga, TN