You Are Here
Satellite Eyes is a MacOS app that automatically changes your desktop wallpaper to the satellite view of where you are, right now.
Pull your laptop out somewhere new, and your desktop will automatically change to the view from overhead.
It has a number of different map styles, ranging from aerial photography to abstract watercolors. And if you have multiple monitors, it will take advantage of the full width, spanning images across them.
Oh, and it's free.