> Yes, this looks like an (EE) topic, NOT > You need to go to the HISTORY WebSite Closer than videos of Romanian IP :-) It's an engineering tag. The post was prompted by the engineering aspects of the buildings and structures concerned, not their artistic or historic merit per se. Although, in many cases the artistic & historic merit is in large part founded in their extreme mastery of the laws of Physics as they apply to stone construction. I thought about using [OT] (as I often do when considering this sort of post) but it seemed to lie quite well within the guidelines in the FAQ and liable to be of interest to engineers of many disciplines. Russell McMahon -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist