Google Sightseeing blog becomes handy.
Google Sightseeing is a blog that archives the interesting and fun places that you can see in Google Maps and Google Maps Streetview. You can search the blog according to region, country, and type of view (Streetview, aerial view, etc).
Applications for Education
Because of some of the commentary, I would hesitate to send students to browse Google Sightseeing on their own. That said, if you're looking for some interesting landmark views to share with your class to support a history or geography lesson Google Sightseeing is a nice resource.