Ancient masonry hides behind thickets of scaffolding ... the Athenians laid out the Parthenon’s base so that the 228-by-101-foot floor bulges slightly toward the middle, curving gradually ...

The new maple floor in the ballroom of the Highlands ... the Masons designed and built their current home. The order of Ancient Free & Accepted Masons has been a force in American history.

"Analytical study shows that the ancient masonry mortar is a kind of special organic-inorganic composite material," the scientists explained. "The inorganic component is calcium carbonate ...

Still the largest masonry dome on earth after more than six ... 40 stories above the cathedral floor. His laborers toiled without safety nets, applying novel, untried methods.

Archaeologists in London have uncovered a section of Roman masonry that belongs to a nearly ... discoveries in the British capital since an ancient amphitheater was unearthed in the 1980s.