'I wanted the building to fly': Renzo Piano's Santander gallery opens

Spain’s €80m levitating Centro Botín showcases nautical flair and offers visitors easy access to waterfront for first time
Two great hull-like forms stand on the seafront in Santander, northern Spain, clad in thousands of pearlescent discs, like a pair of ships encrusted with exotic barnacles. Jacked up 6 metres (20ft) into the air on slender white pillars, allowing views through to the water, this is the new Centro Botín, an €80m (£70m) art gallery by Renzo P