Inside the Head
Source: CSS Design Awards
I really love this website because it is different from anything I've seen before. It is a book that is a website. The site starts with an animation explaining what the site is. The animation isn't too long and it really helps the viewer know what to expect from this website. I really like the illustration and typography used on each page that ties everything together. The site has a unique navigation system, yet it is still very easy to navigate.