Madrid's metro system is clean ... As an occasional user, you can sign up at a docking station totem and choose from flexible one-, three- or five-day passes. At the end of your selected period ...

Keep in mind that the neighborhoods are best traveled by foot – to fully absorb the local flavor – but Madrid's vast metro system provides relief should you grow fatigued. Accessible via Sol ...

Spain's capital city Madrid has a £151million plan to extend one of its metro lines in a move aiming to benefit 62 million passengers. Madrid wants to extend it Line 5 Metro to the city's airport ...