Madrid environmental, sporting, leisure and cultural interest. Madrid Río provides a link with other green spaces in the city such as Casa de Campo and the Linear Park of the Manzanares River. The main landscaped area in Madrid Río is the Arganzuela Park, covering 23 hectares where pedestrian and cycling routes cover the whole park. The Madrid Río cycling network covers some and is linked to other bike routes. To the north, Madrid Rio connects to the Senda Real, the Green Ring for Cyclists and the E 7 (GR 10) trail, which goes as far as the Sierra de Guadarrama mountain
Madrid Metro being postponed and canceled. Unlike normal Spanish road and rail traffic, which use right hand drive, Madrid Metro trains use left-hand running on all lines because traffic in Madrid drove on the left until 1924, well after the Madrid Metro started operation. The Madrid Metro operates every day from 6:00 am until 1:30 am. A light rail system feeding the metro opened in 2007 called Metro Ligero ("light metro"). The Cercanías system works in conjunction with the metro servicing commuter train services to and across the city. Some underground stations are large enough to hold public events, such as the