For over two thousand years the Parthenon has survived earthquakes, explosions, and centuries of pollution eating into its marble. This film follows the restoration team on the Acropolis in Athens as they take the building apart stone by stone to fix damage done by a disastrous 19th-century reconstruction, when iron clamps were driven into the marble and later rusted, cracking the stone from within. Engineers and archaeologists use computer modeling and old quarry records to work out how ancient builders cut, lifted, and fit blocks weighing tons with no metal tools, testing reconstructions of their cranes and pulley systems on site. The film also digs into the design tricks the Parthenon's architects used to correct for optical illusions, curving the foundation and tilting the columns so the building looks perfectly straight from a distance. Interviews with the restoration crew make clear how much of this work is still guesswork, matching two-thousand-year-old craftsmanship stone by stone with modern tools.