#4 Bourtange, Vlagtwedde, Netherlands
53.0066°N 7.1920°E. Bourtange is a village with a population of 430 in the municipality of Vlagtwedde in the Netherlands. The star fort was built in 1593 during the Eighty Years’ War when William I of Orange wanted to control the only road between Germany and the city of Groningen. Bourtange was restored to its mid-18th-century state in 1960 and is currently used as an open-air museum.
