Game 183 of Anatoli Mazukewitsch's opening trap collection "Verflixte Fehler" is rather unspectacular in itself until one realizes where it must have been played.
Milner-Barry - Alexander
1.e4 e5 2.Sc3 Sc6 3.Bc4 Bc5 4.Qg4 Kf8 5.Qg3 d6 6.d3 Sd4! 7.Bb3 Be6 8.Bg5 Qd7 9.Kd2 h6 10.Be3 Sf6 11.Sge2? Sxb3+!
Position after 11.Sge2
The combination to catch the white queen - 12.axb3 Sh5 13.Qh4 g5 14.Qxh5 Bg4 is not so spectacular as the details of this game: Milner-Barry vs. Alexander, London 1940.
There is only one place in London where this game can have been played.
Both Philip Stuart Milner-Barry and C.H.O.D. Alexander had played on the 1939 Chess Olympiad in Argentina, which was the greatest success and incidentally also the greatest loss for German chess. When the war broke out on September 1st 1939, Milner-Barry and Alexander were ordered to play an important role in winning World War II. The German army, Wehrmacht, has used coded messages. Milner-Barry, Alexander, Golombek, Alan Turing, and some more were ordered to participate in a top-secret military operation that would lead to the decryption of the ENIGMA code. They were stationed not far from London (45 minutes away with today's cars) in the legendary Bletchley Park, Hut 6, where over the course of the war the code was cracked and the Allies went on to win the war. When Hitler, and Nazi Germany, was defeated the details of the military operation became a part of the history books. Turing became a leading computer scientist while the chess masters remained as famous as they always were.
With all this knowledge, we can determine that the game above was played on exactly the ground where World War II was won: Bletchley Park. The game itself is fairly unspectacular, but the circumstances that lead to the two players to meet there have become a vital part of modern history.
[EDIT: Actually it was Hut 8 where Milner-Barry, Alexander and Golombek worked. Thanks to the maintainers of the Bletchley Park for the correction!]
[EDIT2: See for the backgrounds http://www.bletchleypark.org.uk/ and http://en.wikipedia.org/wiki/8th_Chess_Olympiad]
[EDIT3: It was first Hut 6, then from 1941 Hut 8 where they worked, according to Wikipedia]