On the Oostelijke Havendam Oostende (seawall) there are almost always Ruddy Turnstone and Purple Sandpiper around. It's a good place for gulls, terns, seabirds. It can be good in autumn migration, especially when there is a NW-wind blowing! The beach nearby has sometimes a lot of gulls, terns and waders.
Park your car near the docks and walk direction beach. There is a lot of real estate development in the area, so there might be changes in the near future. In autumn and spring, watch out for small birds. Click on the P in the map to get directions.