De Kuilart is a five-star holiday park and campsite situated on the shores of De Fluessen, Friesland's largest lake, near the town of Koudum.

The site covers around 41 hectares and offers approximately 543 pitches, including touring and seasonal options, many positioned directly on the water. It is reached by turning off the N359 (Lemmer–Bolsward) at Koudum and following the signs.

The park is a popular base for watersports, with its own marina offering sailing and windsurfing lessons as well as boat hire. Beyond the water, guests can explore the surrounding area by bicycle or on foot through nearby woods.

An indoor swimming pool, restaurant overlooking Lake Fluessen, and the Grand Café It Skippershûs round out the on-site facilities.