★★★★★★★★★★4.5 · 20 reviews · 2 to 4 hours (approx.)
Explore Valkenburg with a self-guided app hunt through castles, caves, churches, and local history at your own pace.

“We have already done several qula trails and are very happy when we visit a city, to encounter all the sights in this way. The assignments are simple and short, but this makes it nice that you take a closer look at the place you are in, but also doesn't really matter if you are right or wrong, unless you are really playing for the points. We had a very nice day, we just think that at point A the garden / park behind the castle should definitely be mentioned because this is really worth it and if you don't know it here you would miss it. Valkenburg has a…”
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