One of my favorite albums of all time. My CDs of this and The Wall got me through high school and introduced me to the wider world of prog rock. I will argue that 2112 was Rush's greatest album, and that the singles on the B-side deserve way more love. Passage to Bangcock and Something For Nothing are masterpieces in their own right which would have shined had they not been bulldozed by the epic greatness of the title track. This is the album that saved Rush and paved the way for Canadian and American prog.
2112 is amazing, but I'm not sure if it's the best in their catalogue. By the way, the city is spelled "Bangkok" in most languages lol.