Use a Xenu MAP file or your own file to make a graph of your website structure (see the end of the page for more info on how to use this tool).
First enter your website URL (www.mysite.com) on the field.
Then use the Xenu export tool to get a MAP file of your site. This file must contain a first line with a description of the fields. The separator must be a TAB.
Example of file if you want to create a custom one :
Source Target http://www.mysite.com/ http://www.mysite.com/page1 http://www.mysite.com/ http://www.mysite.com/page2 http://www.mysite.com/page1 http://www.mysite.com/ http://www.mysite.com/page2 http://www.mysite.com/page3 http://www.mysite.com/page3 http://www.mysite.com/page1
You can use this sample file and enter "www.mysite.com" in the input field.
The number you will see is the Internet PageRank of the website. You can click on a graph node to get the page URL.
If everything is okay, you should see a beautiful graph like this one :