The Great Pyramids of Egypt, built around 2600 BC, are a few of the most enduring samples of stone masonry architecture. Crafted from enormous limestone blocks without the usage of mortar, these constructions showcase the amazing ability and knowledge of historic Egyptian builders. The Roman arch underwent an important modification https://f004.backblazeb2.com/file/DigitalAsset/westhillmasonry/Hardscape-Contractors.html