The phrase “Locked in Time” refers to an ingenious secret of Roman engineering: stone clamps. This simple but effective technique was a cornerstone of Roman construction, ensuring the longevity and stability of their most iconic structures. Unlike modern buildings that rely on mortar and concrete to bind stones together, the Romans used mortar as a filler and instead “locked” massive stone blocks with intricate metal clamps. These clamps, often shaped like a capital I or a double dovetail, were made of iron, bronze, or copper.

The process was a testament to Roman precision and craftsmanship. After two large stone blocks were meticulously carved to fit together, a depression was chiseled into the top of each block. The metal clamp was then hammered into place, binding the two stones together with incredible strength. To protect the iron from corrosion, the clamps were often coated in lead, a process that both secured the metal and sealed it from moisture.