IV — Longevity & Craft 07 / 12

The craft endures. The empire fades.

Structural integrity of six protected heritage sites, assessed across three millennia of continuous standing

STRUCTURAL INTEGRITY INDEX 0% 20% 40% 60% 80% 100% 64% Parthenon 52% Colosseum 91% Angkor Wat 74% Borobudur 78% Chichén Itzá 83% Machu Picchu c. 1150 CE — largely intact