Republic of Ireland v Germany 12/10/12, a 6-1 defeat.
Being a Celtic fan, I love Celtic Park but, in the absence of that from the list, I have to pick this one as it is a simply glorious stadium with an unusual design. Also, I am a Republic of Ireland supporter so there is more than a hint of bias.
For a so called 5 star stadium, used for semi finals and finals, it is a hole of a place. The atmosphere is non existent and the seats are too far away from the pitch.