RankingRoyals - The London Underground started in 1890 and currently serves over 1.3 billion passengers annually and 4.8 million daily making it world's 11th busiest metro system. Budapest Metro is the oldest
![Paris Metro Station with Train and Peoples Editorial Stock Photo - Image of passengers, passenger: 106547663 Paris Metro Station with Train and Peoples Editorial Stock Photo - Image of passengers, passenger: 106547663](https://thumbs.dreamstime.com/z/paris-metro-france-september-train-arrives-cite-station-second-busiest-system-europe-moscow-106547663.jpg)
Paris Metro Station with Train and Peoples Editorial Stock Photo - Image of passengers, passenger: 106547663
![Commuters take a subway train on the Moscow Metro in Moscow, Russia, 4 July 2018. The Moscow Metro is one of the busiest metro systems in the world Stock Photo - Alamy Commuters take a subway train on the Moscow Metro in Moscow, Russia, 4 July 2018. The Moscow Metro is one of the busiest metro systems in the world Stock Photo - Alamy](https://c8.alamy.com/comp/W66K5X/commuters-take-a-subway-train-on-the-moscow-metro-in-moscow-russia-4-july-2018-the-moscow-metro-is-one-of-the-busiest-metro-systems-in-the-world-W66K5X.jpg)