text:  When you bring engineering and art together, it can be really highly charged emotionally. Entering some underground stations is like entering a museum, but for the price of a metro ticket. It's a sort of gift given to the metro users every day. The art you see in the metro is part of the people's image of Paris. It's true for visitors, but it's also part of the self-image of the people that live there. It's one of the things that can make you feel good about being Parisian.