I think the subject is "There". Am I right?
***** NOT A TEACHER
*****
Hello, Archanger:
You have
already received the answer, and if I were you, I would
definitely follow that advice on a test.
But I have some information that may make you feel a little better: at least one book agrees with you!
In
Making Sense of Grammar (1980) by John Clark Jordan, he argues that "there" in your kind of sentence should be called the subject.
Mr. Jordan is described as a former Professor of English and Dean of the Graduate School at the University of Arkansas. So maybe we should not immediately dismiss his opinion.
I do not really understand his reasoning, so I shan't try to explain it to you! But I think that the lesson for us is to remember that in English grammar, sometimes there may be more than one way to analyze a sentence.
James