Which facility was the world's first long-range guided ballistic missile tested at?
Peenemünde Airfield
Title: Agni (missile)
Passage: The Agni missile (Sanskrit: अग्नि, "Agnī", "fire"; also the Hindu God of Fire) is a family of medium to intercontinental range ballistic missiles developed by India, named after one of the five elements of nature.  Agni Missiles are long range, nuclear weapons capable surface to surface ballistic missile.  The first missile of the series, Agni-I was developed under the Integrated Guided Missile Development Program and tested in 1989.  After its success, Agni missile program was separated from the IGMDP upon realizing its strategic importance.  It was designated as a special program in India's defence budget and provided adequate funds for subsequent development.  As of 2008, the Agni missile family comprises three deployed variants while two more variants are under testing:
Title: V-2 rocket
Passage: The V-2 (German: "Vergeltungswaffe 2" , "Retribution Weapon 2"), technical name Aggregat 4 (A4), was the world's first long-range guided ballistic missile.  The missile with a liquid-propellant rocket engine was developed during the Second World War in Germany as a "vengeance weapon", assigned to attack Allied cities as retaliation for the Allied bombings against German cities.  The V-2 rocket also became the first artificial object to travel into outer space by crossing the Kármán line with the vertical launch of MW 18014 on 20 June 1944.
Title: Test Stand VII
Passage: Test Stand VII (German: "Prüfstand VII" , P-7) was the principal V-2 rocket testing facility at Peenemünde Airfield and was capable of static firing of rocket motors up to 200 tons thrust.  Notable events at the site include the first successful V-2 launch on 3 October 1942, visits by German military leaders, and Allied reconnaissance overflights and bombing.
V-2 rocket Test Stand VII