Location: department Yvelines in Île-de-France region, west from Paris
Area: about 50 km2
Population: about 40,000
About the tow: Saint-Germain-en-Laye was founded in 1020 when King Robert the Pious founded a convent on the site of the present Church of Saint-Germain. King Louis XIV was born here. The partneship agreement was signed on 5th April, 1992 by Konstancin-Jeziorna Commune Mayor Józef Hlebowicz and Saint-Germain Mayor Michel Péricard.
Read more about Saint-Germain in Wikipedia.