The Town Where the Border Runs Through Your Front Door

House H7 in Baarle has two front doors and two house numbers. One belongs to Belgium, the other to the Netherlands. The international border runs straight through the building, marked on the floor of the entry by a line of white tile crosses, and bisects an interior wall. The owners pick which country to receive their mail in.

This is not a quirk. Baarle is a single Flemish-Brabant town that contains 22 Belgian exclaves sitting fully inside the Netherlands, plus seven Dutch counter-exclaves nested inside those Belgian patches. Twenty-six separate parcels of one country, dropped into another country, all in a single municipality. The largest Belgian exclave on its own holds six Dutch enclaves. Streets carry a painted white dotted line wherever the border crosses them, with a small B and NL on the appropriate sides, because otherwise nobody could tell.

The mess is medieval. Between roughly the 12th and 14th centuries the Lords of Breda and the Dukes of Brabant cut a long sequence of land swaps, sales, and feudal agreements over the same farmland. When the Netherlands and Belgium drew their modern border under the Treaty of Maastricht in 1843, the negotiators left Baarle alone — the holdings were too tangled to clean up — and they have stayed tangled ever since.

For decades, a house's nationality was decided by which country its front door opened onto. That was useful, because Belgian and Dutch shop hours, alcohol laws, and tax rules diverged. Restaurants on the line would seat you on the side that was still open. Homeowners reportedly moved their front doors a few meters when it produced a better tax bill. Schengen has flattened most of the practical differences, but the line is still there, and the painted crosses are still on the pavement.