In Light of a Major Expansion, a Historic Look at the Paris Metro.

The article discusses the history and expansion of the Paris Metro. It highlights that Paris was a bit late in adopting underground mass transit compared to other cities, but now has a 124-mile-long underground and elevated Métropolitain network. The article mentions an exhibition called "Métro! Le Grand Paris en mouvement" that traces the history of the network and showcases the plans for its expansion. The exhibition features scale models, historic artifacts, and details of the new stations and public artworks. The article also mentions the involvement of architect Dominique Perrault in the project. [Extracted from the article]