Fifty States and National Park Checklist, both developed by Tom Alphin, are two travel apps for your Windows Phone designed to keep track of the places you've been and document what you've seen.
Fifty States: This is a simple app that lists all fifty States. As you visit each State, you simply add a dated note summarizing your travels. For example, for Kentucky you may note that you visiting Mammoth Cave. Once visited, a flag will appear besides the State name and the number of visits listed beneath.
There is a free trial version available for Fifty States with the full version running $.99. You can download it here at the Marketplace.
National Park Checklist: National Park Checklist goes a little further than Fifty States in that it not only lists all 58 National Parks but it also provides basic information on each Park. As you visit each Park, as with Fifty States, you can document your experiences. The app also has general information about visiting the National Parks such as general admission and lodging details.
There is a free trial version available for National Park Checklist with the full version running $1.99. You can download it here at the Marketplace.
Both apps are an easy way to record and track your visits abroad. It would have been nice to have seen a photo gallery page with these apps but if you're looking for a simple travel documentation app, they might be worth a try.