Plus thematic challenges!
It's multiple choice, which makes the choices a bit easier. And it seems to provide a better level of geographic randomness than some similar games. But best of all, in addition to the "Worldwide" mode, you can choose from a number of different styles of gameplay.
Want to play only within one city? You can do that. You can also play a guessing game for America's top metro areas, or National Parks. Or if you're really feeling like a challenge, play the guessing game that places you at a random Mexican archaeological site. It's practically impossible, but the scenery is great.
Top photo: Kohunlich, Mexico, via Aguilardo/Wikimedia Commons.