An aerial panoramic view of Port Vell, Barcelona, Spain, from atop the Columbus Monument. The area has been in use as a port since the 4th century BC, when it was settled by the Laietani. The current incarnation was built as part of an urban renewal program prior to the 1992 Barcelona Olympics. It is now a focal point of the city and tourist attraction, drawing up to 16 million visitors a year.Photo credit: David Iliff