Plaza Castilla

Monument to Calvo Sotelo, a Spanish politician, in Plaza Castilla, with the KIO towers. KIO Towers are twin office buildings in Madrid, Spain. KIO Towers, are twin office buildings in Madrid, Spain. They were designed by the American architects Philip Johnson and John Burgee, commissioned by the Kuwait Investment Office (hence their initial name "Torres KIO" or "KIO Towers"). Each building is 115 metres tall with an inclination of 15 degrees, making them the first inclined skyscrapers in the world.