Boats moored in Barcelona, Spain.

At one end of the famous Las Ramblas is one of Barcelona’s port areas. A high-end shopping centre is now where what may once have been loading docks.

Instead, there are now many boats moored for purposes of pleasure rather than commerce. Behind where this photo is looking is still used for large ships, but they are cruise liners and ferries.

At night, the water is lit by nearby lights and one can see thousands of fish swimming near the surface.