Can you spot something wrong with this house? Of course it’s the bricked-up window. I suspect this is an example of window-tax avoidance. The window tax was a property tax based on the number of windows in a house, in force in England, France, Ireland and Scotland during the 18th and 19th centuries. To avoid the tax some houses from the period have bricked-up window-spaces, which could be reopened at a later date. In England the tax was introduced in 1696 and repealed in 1851. France had a similar tax, from 1798 to 1926, l’impôt sur les portes et fenêtres. As far as I know, there was never a window tax in Belgium which is why you don’t see a lot of bricked-up windows here.