Marl Quarry 't Rooth is located at just a few minutes walking distance from the resort. People still mine for marl here. The Limburg Landscape Foundation offers various excursions here (registration required). You can also walk through the part of the quarry that has been repurposed as a nature reserve, and you can even see wild Konik horses there.
Gaia Zoo, an award winning zoo, is just a half hour-drive from the resort. The zoo has already won various prizes, for example for being the most innovative zoo, and for being the second best outing in the Netherlands in 2016.
At just under a twenty minute-drive from Resort Mooi Bemelen, Maastricht is the perfect city to explore. This provincial capital is known for its exuberant life, its many museums, and hours worth of shopping.
After just a 10-minute drive you will find yourself in Valkenburg. This town is known for its beautiful sights and fun activities, such as the Christmas market, and its old city walls and gates. Walking through the city or relaxing on one of the many outdoor cafés that Valkenburg has to offer makes for a great day out.