In Old Town Valencia, the historic central district, many of the businesses have roll-up metal gates over their doors at night. But why leave them plain and unadorned when you could decorate them with bold, colorful art? Animals, fanciful figures, and abstract designs abound, sometimes relating to the business inside and sometimes not. They’re best admired in the early evening, when shops are closed but it’s still light enough for photography. It’s like a free gallery in the street that’s open every night.