I'm overwhelmed at the vast range of spectacular & breathtaking vistas on Flickr, including the monastory of Holy Trinity in Meteora (8,500 views of Meteora!).
Some more on http://www.snap.com/ too.
NLA picture website also has reams of material on my topic.
A quick look at fotolia, snap & dumpr showed them far in advance of my current capabilities but a goldmine for the more highly skilled.
