On February 9, 1851, the second railway line was opened in Spain, and with it the first train station in the city, Atocha, it is considered the most important train station in the city, since over the years of its operation it has transported more than 15 million passengers through it. The station is very large and huge, and has a very nice decoration with large inner courtyards containing real trees and ponds. Arrive early to walk into the station yards.