10 Downing Street, colloquially known in the United Kingdom as Number 10, is the headquarters of the Government of the United Kingdom and the official residence of the First Lord of the Treasury, a post which, since 1905, has been held by the Prime Minister.

The Central Government War Headquarters is a 35-acre complex built 120 feet underground.

The Erlacherhof is a majestic palace located in the heart of Bern.

The Landtag of Vorarlberg is an iconic government building.

Berlin, the largest city in Germany, is known for its vibrant culture and tumultuous history.

The Berchtesgaden Chancellery Branch office is a significant residential and cultural heritage ensemble in Bischofswiesen in Bavaria, Germany.

Warsaw is the bustling, modern capital of Poland, with an appealing mix of restored Gothic, communist concrete, modern glass and steel.

The Aalto Center is a renowned ensemble of administrative and cultural buildings.