Fire
Flemish Brabant represents fire in the shape of the newly restored Vuurmolen, or Fire Mill, in Overijse, which used to mill grain. In Leuven, meanwhile, the Institute for Thermotechnics at Arenberg Castle will be open for guided visits, which will take in a working steam engine and a jet engine.

Water
Water is represented by bus trips to sites in Bilzen, Riemst, Lanaken and Voeren in Limburg province, including water towers, springs and the banks of the Maas river.

Earth
Earth is represented in Antwerp province by the series of works that have been going on since 1950 in the De Zegge area near Geel, where a former marshland was drained and made available for agriculture, leaving behind a new landscape of woodland, heath and hayfields.

Air
Steam is what happens when fire turns water into air, and steam power is on show in the Kortrijk area of West Flanders. Visitors can tour a distillery, a flax producer and a linen processor, all of which were once equipped with steam-driven machinery.

De Lijn is offering unlimited travel by tram or bus throughout Flanders on Open Monument Day for a flat price of €2.50.

http://openmonumenten.zita.be