Torre Picasso, Madrid

The 157m, 43 floor Torre Picasso, designed by Minoru Yamakasi, for 9 years the tallest building in Madrid and for 3 years the tallest building in Spain until the building of the Gran Hotel Bali in Benidorm, (info from wikipedia).
Still one of the most graceful towers in Madrid, even after being surpassed in height by the new skyscrapers to the north of the city.