The
Madrid Metro (Spanish:
Metro de Madrid) is a
metro system serving the city of
Madrid, capital of
Spain. The system is the 8th longest metro in the world, though Madrid is approximately the fiftieth most populous metropolitan area in the world. Its fast growth in the last 20 years has also put it among the fastest growing networks in the world, rivalling many Asian metros such as the
Shanghai Metro,
Guangzhou Metro,
Beijing Subway or the
Delhi Metro. Unlike normal Spanish road and rail traffic, which uses
right hand drive, Madrid Metro trains use
left-hand running on all lines for historical reasons. The Madrid Metro operates every day from 6 am until 1:30 am.