i will be spending 3 days in london as i accompany my hubbie for a business trip thr from 21/01 till 24/01, leaving for madrid on 25/01. the following is my iti for my stay in london, can any kind soul advise me places worth visiting??? thankz in advance. Eurostars Madrid Tower Paseo de la Castellana 259 B Madrid; CP: 28046. Spain.