Ostend harbor has two ports, the marina and the "working" port for fishing boats that ply the North Sea. I went there as it is a place full of photo opportunities: old barges, rusty things that I have no idea what their use ever was, fishing nets, bridges and dry docks ... It is a very interesting place and one where most tourists will never come and it is likely not in any tourist guide. It also has the fish mine where fish is sold wholesale in the early morning, but that will be another trip.