Limburg

Jutting a long finger south, the Limburg 'appendix' was created as a geopolitical quirk in 1839 to link the major historical city of Maastricht to the rest of the Netherlands. The hills and forests of southern Limburg make for excellent hiking and biking and the Drielandenpunt where the Netherlands, Belgium and Germany converge is the country's highest hill, though at just 323m that's not exactly Alpine.