The Lego monorail was retired too soon and had awesome undeveloped potential! Lots of Lego towns and cities have trains, but a Monorail would make yours unique!
PLEASE NOTE! This is an advanced level project that requires special monorail pieces from one of three LEGO sets (6990, 6991 or 6399) released between 1987 and 1994. You will need the Motor, battery pack, wire connector, at least two wheeled baseplates and track which can all be found on Ebay and Bricklink so check out prices and availability before buying my instructions.