I thought the original was great and have used it as an example of an online teaching resource for years. The new site is richer and shows evidence of thoughtfulness to the users' needs. My first thought was "so this is what a web site looks like when it grows up..."
... a fantastic resource for classroom teachers as well as lifelong learners of all ages and intentions. The compare and contrast feature is extremely useful and wonderfully simple! The THINK questions are a feature that teachers surely love. I respect that this site clearly put the needs of teachers first in their mind when they designed the site. It's a fabulous museum education website, an exemplar for this category.
An elegantly designed site with lots of thinking and teaching going on. They've taken universal teaching ideas (compare and contrast) and have presented them in a simple, yet sophisticated manner. The site is non-threatening for the technophobic teacher, who will be a master in no time.