This website is great for someone who wants to see the world, the country, or has actually done it. The site divides destinations by category, such as the 50 states, major league baseball parks, NASCAR tracks, as well as others.
When you select a category, fill out the checklist and then save your list by clicking on the orange button. From there, you'll get the option to buy a certificate for your travel accomplishments, or to continue to update your travel log. Once you've filled out your log, you get a list of the number of destinations you've visited and what level of achievement you've reached in each category.
To help you on your way, the site provides links to various travel related web pages.