Actually I had a Nicaraguan friend who had a serious illness and was admitted to the Ramón y Cajal hospital . She told me it was in Colmenar Viejo ... NOT Careterra Colmenar Viejo . I was on the Cercanía train and admiring the landscape , the eagles ( maybe vuitres ) flying above , goats in the fields , and wondering how a big hospital could be out here . Of course when I eventually arrived in Colmenar Viejo , I asked the lady at the train station where this hospital was and she said it´s back in Central Madrid .. Luckily the train was just leaving to go back to Madrid and I jumped on and finally got to visit my friend !