But what if the hotels aren't there anymore? All you'll know is that you have been at these geo-coordinates once.
I have the same plan for when I'm old, so I take pictures with my iPhone whenever I want to hold on to a moment (and taking a photo is convenient). The image quality may be crappy, but I end up with one more GPS-tagged picture on the world map. The iPad Photos app nicely visualizes this, before that I'd used iPhoto.
Maybe you could add support for this too and overlay it with the "fog of world"?
Even though the hotels aren't there anymore. We can still memorize the hotels we visited before. They are not there, so we can memorize, right?
Mapping photos to the exploration map is planned in future version, or even for a Mac version. But there are a couple of higher priority tasks we need to do before that, such as support for sync between devices.
I have the same plan for when I'm old, so I take pictures with my iPhone whenever I want to hold on to a moment (and taking a photo is convenient). The image quality may be crappy, but I end up with one more GPS-tagged picture on the world map. The iPad Photos app nicely visualizes this, before that I'd used iPhoto.
Maybe you could add support for this too and overlay it with the "fog of world"?