“3D Virtual Globe” by mifki is an application similar to Google Earth.

Quote:

My virtual globe homebrew application for PSP. Not so many features for now, just explore beautiful places of our planet with 3D terrain and several layers to choose from. Your comments and ideas are welcome.

Hope it’s obvious that data is downloaded from Internet on demand and you’ll need active WiFi connection. After downloading images will be cached and loaded from memory stick next time so make sure you have enough free space too.

http://mifki.blogspot.com/2008/12/3d-virtual-globe-for-psp.html