Both are recommended.
De Hoge Veluwe National Park / Kröller-Müller Museum (only with a car)
Both places were great and I would love to go back and explore them more.
Zorba De Griek – Kerkstraat 40 Eindhoven
Het Groote – Ten Hagestraat Eindhoven
Cafe in the Van Gogh Museum, Amsterdam
Rijks Museum http://www.rijksmuseum.nl
Van Gogh Museum http://www.vangoghmuseum.com
Kröller-Müller Museum http://www.kmm.nl/
No special trip but if you have time museums:
Van Abbe Museum, Eindhoven http://www.vanabbemuseum.nl/
Not really recommended but its ok
Sex museum, Amsterdam
Things that I would avoid:
Frankfurt Airport (if trying to connect to another flight)
Zara Department Store