OS X users: go get a copy of tickr, set your size to “Medium” or “Large (Whoa!)”, and type “| isfahan esfahan” into it. You’ll be glad you did.
Alternatively, you can view the flickr stream here, but the joy is in the higher resolution photos just streaming across (or down) your screen.
The Nuclear Technology/Research Center in Esfahan is one of Iran’s suspected uranium enrichment facilities. Esfahan is also a major cultural center and home to some of the finest Persian rugs made in the world (along with Nain, Tabriz, Kashan, Yazd, and Najafabad).
Update: more stunning photos of Isfahan, Iran.

