Las Palmas is a popular place to base a Canary Islands vacation. Not only is it the Canaries' largest city, it's also got a number of world-class attractions. Its beach — the 2½-mile Playa de ...

Above: A Von Karman vortex street downwind of the Canary Island chain in the eastern Atlantic Ocean off the coast of Africa on Feb. 27, 2015. Image credit: NASA Worldview. Editor's note ...