Up until the end of the 19th century, the area was known for the purity of its waters! Natural springs were exploited here until the 19th century, the most famous being sold under the name of Elvire. No trace, nor records, remain of this speciality, unique in the area around Brussels.On the other hand, both Wezembeek and Oppem managed to hold onto their respective castles. The castle in Wezembeek dates back to Medieval times, but was refurbished according to 18th century tastes. Oppem castle is also very old, but started life as a convent.On the commune square, the statue of a strange character on horseback called Strauff-Hein is the equivalent of a local Don Quichotte. On his head is a bucket, upon which sits an owl. He is banging a drum and playing an organ with... his foot!Apart from its residential neighbourhoods and exceptional tranquillity, Wezembeek-Oppem has kept some rural characteristics - there are still a few sunken lanes ! - which go to make the place charming, whilst being practical due to its location in the immediate outskirts of Brussels. Like Kraainem and Rhode-Saint-Genèse, this Flemish commune now has a majority of French-speaking residents.