← All studies

Tagged “ashlar”

• HIGH WONDER

  Machu Picchu

  How did the Inca raise a stone city on a knife-edge Andean ridge at 2,430 meters — terracing near-vertical slopes, fitting granite blocks so tightly a blade won't slip between them, and hiding a drainage system beneath it all — so well that it has outlasted five centuries of torrential rain and earthquakes?

  early-to-mid 15th century CE (Inca, reign of Pachacuti) · Machu Picchu, Cusco Region, PeruAdded July 2026
• HIGH WONDER

  The Treasury of Atreus

  Corbelled roofs everywhere else in the ancient world stall out around five metres, because a false dome has no keystone to fight the span — so how did Bronze Age masons at Mycenae close one 14.5 metres across, and set a single 120-tonne lintel above its door, without iron, pulleys or a crane?

  c. 1400–1250 BCE, Late Bronze Age (Late Helladic III) · Mycenae, Argolis, GreeceAdded July 2026