I passed that place once, when walking from Petit Lanaye along the Rue Collinet to Maastricht. Normally, when you cross an international border, there's usual

I passed that place once, when walking from Petit Lanaye along the Rue Collinet to Maastricht. Normally, when you cross an international border, there's usually a checkpoint, or at the very least a sign. There was no sign. I only realized I'd crossed into the Netherlands when I heard people speaking in Dutch. The only indication of country around there seems to be the language spoken by the inhabitants, and the parcel of land being given up by Belgium is uninhabited.