This document compares various aspects between Madrid and London such as size, population, languages, sports, timetables, local food, money, weather, transportation, airports, events, and things to do. It finds that Madrid has a greater population than London, more types of local food and varied public transportation compared to London. London has more types of events and easier walkability due to less car usage. Opinions are also given that Gorka prefers London for its beauty while Jon prefers Madrid for being in Spain.