Everything they did was on a scale so grand that nothing today can compete. Rome comes close and some of the castles in England are pretty amazing but they just can't compete with Egyptian grandeur. It saddens me to know that something so amazing is so far away and so dangerous to visit. Some of the things they accomplished still can't be explained or accomplished today, even with modern technology. Arguably the pinnacle of human achievement as far as architecture goes in my opinion. I work with natural stone quite regularly and even with my laser guided equipment I can not achieve anything remotely close to what they did with geometrical lay outs and precision. Maybe it's just the stone mason in me but I am fasinated by their culture and achievements with such limited technology. I can create some beautiful works of art with limestone, granite & marble but only on a single plane and only for a dozen or so feet.