Panoramic Views of 7 Wonders of the World is a great resource for sharing these great places with students. The panoramic views are wonderful and very easy to use on your computer. You can change your view just by moving your cursor around.
Each image only takes about 30 sec to load and then you are ready to go.
This is a great way to show students some wonderful things in the world without having to go through airport security (or take out a 2nd mortgage for the trip).