Lac Albano

The Papal Palace of Castel Gandolfo, or the Apostolic Palace of Castel Gandolfo from its Italian name Palazzo Apostolico di Castel Gandolfo, is a 135-acre (54.6-ha) complex of buildings in a garden setting in the city of Castel Gandolfo, Italy, including the principal 17th-century villa, an observatory and a farmhouse with 75 acres (30.4 ha) of farmland.

Castel Gandolfo (UK: , US: , Italian: [kaˈstɛl ɡanˈdolfo]; Latin: Castrum Gandulphi), colloquially just Castello in the Castelli Romani dialects, is a town located 25 kilometres (16 mi) southeast of Rome in the Lazio region of Italy. Occupying a height on the Alban Hills overlooking Lake Albano, Castel Gandolfo has a population of approximately 8,900 residents and is considered one of Italy's most scenic towns.

Alba Longa (occasionally written Albalonga in Italian sources) was an ancient Latin city in Central Italy, 19 kilometres (12 mi) southeast of Rome, in the Alban Hills. Founder and head of the Latin League, it was destroyed by the Roman Kingdom around the middle of the 7th century BC, and its inhabitants were forced to settle in Rome.

Albano Laziale (IPA: [alˈbaːno latˈtsjaːle], Latin: Albanum, Romanesco: Arbano) is a comune in the Metropolitan City of Rome, on the Alban Hills, in Latium, central Italy. Rome is 25 kilometres (16 mi) distant. It is bounded by other communes of Castel Gandolfo, Rocca di Papa, Ariccia and Ardea. Located in the Castelli Romani area of Lazio.