Chambourcy is a commune in the Yvelines department in the Île-de-France region in north-central France. It is located 3 km (1.9 mi) west of Saint-Germain-en-Laye and about 25 km (16 mi) west of Paris.

Elbingerode is an Ortsteil of Oberharz am Brocken in the Harz district, in the German state of Saxony-Anhalt. The former town was incorporated into the newly established municipality on 1 January 2010.