Konstancin-Jeziorna is a town in Piaseczno County, Masovian Voivodeship, Poland, with 17,566 inhabitants (as of March 2011, according to GUS). It is located about 20km south of downtown Warsaw and is a part of the metropolitan area of that city. The town was created in 1969 through combining neighbouring towns: holiday resort Skolimów-Konstancin and industrial Jeziorna with a number of villages. The town, a 19th-century health spa, sits on the administrative border of the capital city, Warsaw. The town has an interesting collection of historic villas and new built mansions, a shopping center in a restored 19th-century mill and is the home of the American School of Warsaw. Konstancin-Jeziorna also has a sports team which specializes in football/soccer named Kosa Konstancin created by former professional footballer Roman Kosecki.
