Sometimes the website required up to 100 or more pages and when that amount of pages are required you need to ensure that the pages are presented in a logical hierarchical way that works both on the website for website visitors and is effective for the SEO of the website. Website navigation structure closely follows the ‘breadcrumb’ hierarchy navigation on your webpages and as such it deserves a lot of thought. Take a look at this example website menu / navigation structure for a PADI Dive Center.