In a web application project, one of the very important feature given to user is sitemap control where user can redirect back and front using this control. He can know in which category he is currently in. for example you can check below image, it is from Amazon site where you will lots of pages and lots of categories. This pointed control will be very useful to the user to know in which category he is looking for.
One other way to show all main pages to user is giving all page links in one page as shown below figure.