In many cities around the world, the metro is the main mean of transport. Convenient, fast and economical, MADEMOISELLE O uses it when travelling in the world to feel the energy of the city and local people. Subway or elevated rail, she lets herself be led around town, her head in the clouds. A short moment to dream, and it is already time to get off. A quick look at the subway map to change line… And if subway maps were also a source of inspiration?