- Noordwyk-on-Sea, Katwyk-on-sea, Scheveningen, and Ter Heide are watering-places and fishing villages.
- It is connected by steam tramway with Haarlem and The Hague respectively, and with the seaside resorts of Katwyk and Noordwyk.
- There is also regular steamboat connexion with Katwyk, Noordwyk, Amsterdam and Gouda.
- Katwyk, or Katwijk, 6 m.
- 1808), through which the Rhine (here called the Katwyk canal) is admitted into the sea at low tide.