The 'Fondatie van Boudelo' is a precious nature reserve and 'quiet area' located on the territory of the borough of Sinaai.
The name of the nature reserve is derived from the Abbey of Boudelo. The grounds were part of the donation on wich the abbey was founded about 800 years ago. On the edge of this reserve lies the picturesque canal 'Stekense Vaart'. A walking path guides you along ponds, coppices, mixed deciduous forests, hay meadows, an orchard, ditches, field paths and many pollard trees.
By transforming the former fish ponds into natural pools, the 'Fondatie van Boudelo' has become a haven for dragonflies. Between 2012 and 2014, 28 different species were observed.