Nevaria (above) has been revamped considerably from the last time I visited, back in December. Although the notecard discusses the back story, which springs from the Alice books, it never seemed to be particularly Alice-centric. Now it is even less Alice and more generic "medieval town with creepy castle." The sim is still a "heavy RP" area, so participants are expected to be in character at all times.
Black Pearl Beach has an Alice ride. Nicely done, with a buggy that takes one through the various areas. Some lag issues, but it was worth the trip.
Delirium starts out in an Alice-themed area, complete with "drink me" sign, Cheshire cat, "Eat me" catnip...but then leads above the sewer level into...a grungy urban shopping area. It's as though no one knows what to do with the Alice theme once they have it.