Spain, a nation on Europe's Iberian Peninsula, incorporates 17 self-ruling areas with various geology and societies. Capital city Madrid is home to the Royal Palace and Prado gallery, lodging works by European bosses. Segovia has a medieval manor (the Alcázar) and an unblemished Roman water channel. Catalonia's capital, Barcelona, is characterized by Antoni Gaudí's unusual pioneer tourist spots like the Sagrada Família church.