Scheveningen is a district in the city The Hague which is located at the coastline of the Netherlands. I can really recommend you to spend a day in Scheveningen during your time in the Netherlands.
The Zaanse Schans is located nearby Amsterdam, in Zaandam. It’s a Dutch district from the 18th and 19th century. You can find lots of windmills, old Dutch houses and musea in this district.