Shivering Isles rivals Morrowind in my mind.

Same. It’s easily my favorite Elder Scrolls expansion, period.

mandatory reminder that Cyrodiil was supposed to be a rainforest

I never knew that. Shame the devs for this didn’t go for it, but I suppose fans would be up in arms about it.

EDIT: Apparently they actually DID add some rainforest-y looking locations!