> They are well structured blocks of rocks that distributes the load well basically So is a building like the Burj Dubai, but this is an incredible understatem

> They are well structured blocks of rocks that distributes the load well basically So is a building like the Burj Dubai, but this is an incredible understatement of the technology involved. The reason Roman concrete is interesting is that until ~50 years ago we had no idea what made it so durable. Dams are being built using these discoveries, sounds quite useful to me.