Everybody is having a great time these days with the new and increasing satellite imagery found at Google Maps, finding their own houses and world landmarks.
I found a database built by a Keyhole user describing all the coordinates of the 788 Unesco World Heritage Sites. With a bit of perl magic I turned the Keyhole format into a series of web pages with links to Google satellite imagery.
Some of these landmarks are very cool from above, some are totally boring. Some are in the high-res, many however (especially outside the USA and Canada) are in lower resolution so you can’t see as much. There are links to the Unesco web site for more information on the sites in any event.
You can start with the master page of Google Maps for World Heritage Sites and click to any particular country to see the sites and the links. For example you can click on the USA World Heritage page, and there you will find the link to the satellite image of the Statue of Liberty — where you should then zoom in to see the statue up close. The Mammoth Cave system is not so remarkable from the air. :-)
On pages with low res, you can usually zoom in once or twice, on hi-res pages, you can go in several times to see lots of detail. I fear you can waste a passle of time seeing many of these sites.
Thanks to Aladdin of the Keyhole message board for tabulating the data in Keyhole format.
Just as a side note — right now I am out visiting some real World Heritage Sites (3 in one week) and not correcting my own list in real time.