Favorite long classical piece?

[Cg0779]

To be specific here, by long I mean like an hour long, or at least close to it, not a single movement of a long piece, nor a shorter piece (as in some 15 minutes or so). My contribution would be Dvorak - New World Symphony, which I happen to be listening to right now. Another would be Rimsky-Korsakov Scheherazade (I like long pieces that manage to maintain their excitement). That said, feel free to suggest anything, I really just love classical.