Art.sy is an archive of the world's fine art, providing details of collections, movements, exhibitions and much more. The design of the site does a great job and throughout are many examples of nice interactions, specifically the landing screen, search bar and an unexpected 'View on wall' feature.
The Avery Review keeps its content fresh with some minimal but stylistic interactions that go hand in hand with the content to enhance the overall experience. We particularly like the scroll-distance indicator.
Not only is the layout and design great, but the subtle interactions within pages make Familiar stand out from the crowd. Pay particular attention to the background fade-to-black when you hit a video slide.