Madrid: Museo del Prado
No, you do not need to. But if you do you can skip the line...
Madrid: I need to know the name of train stations to each city to have easy trasfer
Probably in the tickets it will say "PA" that stand for Puerta De Atocha, do not mistake it for Madrid - Atocha Cercanias. The metro station is Atocha Renfe. Anyhow the signs are very clear in the city....
Madrid: sites to see
Hi there! always check out the town hall official webpage esmadrid.com . You have all the answers there.
London: Conecting flights
Hi there! My kids and I (15 and 10) are travelling to Boston. We are Spaniards and will leave from Madrid-Barajas to Stansted with Ryanair. There we will change and take our flight to Boston in less than 2 hours with Spirit Airlines. (I have never travelled with either...