Alsace[al sās′, -sas′; al′sas′; Fr ȧl zȧs′]
- historical region of NE France
- metropolitan region of NE France: 3,196 sq mi (8,280 sq km); pop. 1,624,000; chief city, Strasbourg
A region and former province of eastern France between the Rhine River and the Vosges Mountains. Along with neighboring Lorraine, it was annexed by Germany in 1871 after the Franco-Prussian War and returned to France by the Treaty of Versailles (1919).