Which cities have monorail?

The best known and oldest one operating is the Wuppertaler Schwebebahn in the German city of Wuppertal. Unlike most Monorails the Trains do not ride 'on' a single rail but instead 'hang' from a single rail. In Operation since 1901 as a public transportation system.

Other famous monorails are of course those in Disneyworld and in Tokyo.

Las Vegas has a relatively new Monorail as well.