It was Elizabeth Hand’s novel Winterlong that introduced me to her work. It’s an exotic, ornately written tale set in a future decadent society. I enjoyed the trilogy, though I must admit it seemed to end rather abruptly, or inconclusively to my mind.
Its sequels are Aestival Tide and Icarus Descending.
M John Harrison’s Viriconium Stories are well regarded and I have to agree. I loved Pastel City and Storm of Wings.
Other books set in the same locale are Viriconium Nights and The Floating Gods
A few more stray H authors…
Though I can’t remember much about The Ring of Ritornel by Charles Harness, I have vague memories of quite liking it. Mark Helprin’s Winter’s Tale is more fantasy than Science Fiction and has endured as well loved urban fantasy of New York.
And finally The Green Gods by N C Henneberg – an exotic A Merritt style story wherein plants go to war against men. The cover art is by old favorite Don Maitz
Next – Gwyneth Jones