The polygonal Inca masonry at Sacsayhuamán features massive irregular blocks fitting without mortar—some weighing several tons with joints precise enough to rival watch components. Single stones contact five or six neighbors simultaneously. These walls survived earthquakes that destroyed later colonial structures.
Qorikancha inner temple features perfectly fitted stone blocks assembled without mortar, using gray basaltic andesite. Qorikancha was later converted to a Spanish colonial church, with original Inca stonework still visible. Small stone insertions between larger blocks have been noted at various megalithic sites worldwide, though archaeological interpretations vary.
Key facts claimed:
- Qorikancha inner temple features perfectly fitted stone blocks of gray basaltic andesite assembled without mortar
- Qorikancha was later converted to a Spanish colonial church with original Inca stonework still visible
- Small stone insertions between larger blocks have been noted at various megalithic sites worldwide, though archaeological interpretations vary

