Watch day turn to night as you descend into the dark depths of Zonneberg. Equipped with a sturdy headlight and a taste for adventure, there's no saying what you might find down there.
Situated in Sint Pieter, this natural underground attraction is worth a visit. But you'll find loads more to see and do in the area. St. Servaas Church, Bonnefanten Museum, and Basilica of Our Lady aren't too far from Zonneberg.