Awe-inspiring astrophotography from the Hubble Space Telescope–
http://www.cs.cmu.edu/~spok/grimmtmp/
http://www.mrpicassohead.com/
Have fun!
http://www.photon-echoes.com/aurora-meteor_images.htm
http://lifehacker.com/339474/top-10-obscure-google-search-tricks
http://www.simondale.net/house/index.htm
Stonepages
Web guide to Stonehenge, stone circles, dolmens, ancient standing stones, cairns, barrows, hillforts and archaeology of megalithic Europe.