> where construction companies will just not go because it's certain they will hit ruins and have the project paralized. I lived in one unspecified East Europ

> where construction companies will just not go because it's certain they will hit ruins and have the project paralized. I lived in one unspecified East European city and there was parking lot next to my flat where new construction was planned. It was next to old town so first team of archeologists came. They made grid with holes ~1m deep. Barely found anything. So they left. Then crawler excavator came and after while dug through the huge vault of some medieval cellar. Now there is underground garage. But there were cases when garages were made in place of Roman ruins as well, so this was nothing.