In addition, I can advice you to take a walk along the small beaches of Lagos. Directly behind the harbour one small bay follows the other. The beaches are connected through narrow tunnels in the high stone walls. It makes fun discovering lovely spots going along the seaside. Luckily it is not that crowded and you can really enjoy your time here. Especially the Lagos Roman Bridge is very beautiful. We reached this spot walking along the Praia dos Estudantes.