Title: Diagrammatic Map of The Paris Metro
Size: 63.4cm x 89.7cm
Mapping the Paris Metro is a particularly difficult project for any graphic designer to undertake. The dense network of highly interconnected lines demands great skill in showing them with balance and clarity. Part of the difficulty arises because lines cross Paris at distinctly awkward angles. Deciding at which of the permitted angles to draw them (horizontal, vertical, or 45 degrees) needs some care, and inappropriate choices can result in all sorts of unwanted side effects.
Harry Beck created at least two attempts at a diagram of the Paris Metro network. His second attempt, in colour is now held here at the London Transport Museum.