The Great Hall of Mammals reopened in October I believe; we went last w/e. Part of the Harvard Natural History Museum, the Hall is now updated with gleaming floors, bright paint and newer signage. Freekin gorgeous... can members rent this for cocktail parties?? Sunday mornings are free for Massachusetts residents at the museum; it opens at 9am so great for parents w/ cabinfever kids, and yes it gets busy. Much more than just the Great Hall though, but make sure you also see the famous, and not to be believed until you see, Glass Flowers. Pics below from the HarvardMuseumofNaturalHistory on flickr.