Neutral Moresnet

Moresnet or Neutral Moresnet or Altenberg was a tiny European territory of about 3.5 km² (1.4 mi²) that existed from 1816 to 1919. Its two large neighbors (Netherlands and Prussia) could not agree on who should own it, deciding therefore to make it a neutral territory where both would share control equally. It was located some 7 km (4 mi) southwest of Aachen, directly south of where the borders of Germany, Belgium, and the Netherlands intersect on the Vaalserberg.