The Thumbnail view can be used to see the layout of a page or to jump from one page to another.
With Word 2003 and 2007, Thumbnail views are available in Normal, Print Layout, Outline, and Reading Layout views. Go to View>Thumbnails to display the Thumbnail pane to the left of your document. In 2007+ go to View>Navigation tab>Show.
Thumbnail versions of your document will appear in a new pane to the left of your current document. Click on a thumbnail page and Word 2003/7 will automatically jump to the selected page.