Wuppertal Suspension Railway
The city of Wuppertal (Alemania) has the world’s oldest monorail. It entered into service in 1901, inaugurated by Emperor Wilhelm II. It does not run on rails but hangs 12 metres above the ground. It is known as the steel dragon, and the crossing over the river Wupper accounts for most of its route. It carries 25 million passengers a year.