This shot seems appropriate for Napoli, and not just its port.

Napoli has been ruled by many and varied groups over the last few thousand years, with each one making their mark. The result is a metaphorical patchwork of many different colours, just as we see on the container docks of the Avamporto di Levante (the "eastern outer port"). The red and white striped cranes make a striking statement themselves, but the shipping containers reinforce the idea of the multi-coloured city to which the port belongs.