I love this thread. I like the fact that this is favorite and not best sets. Sets like MMV and the Ultimate Chess Set even though the best designed sets don't make my favorite list. Do others feel this way too?
Black Monarchs Castle gotta love those brick built battlements on the towers.
Forestmen's Hideout the ultimate camoflaged treehouse.
Dwarve's Mine not only had the first Dwarves and Trolls but it is also important to note: it is a freaking mine!