37.0272°N, 21.6950°E.
Palace of Nestor at Pylos (Labyrinth Tablet) is a labyrinth installation in Messenia, Peloponnese, Greece. The design is a classical 7circuit layout with 7 circuits, 8 walls, approximately 0.12 metres in diameter, built of clay. Documented age: ~1200 BC (1200 BC). Current condition: intact. At the Palace of Nestor in Pylos, a Mycenaean scribe idly doodled a 7-circuit classical labyrinth on the back of a Linear B accounting tablet — then the palace burned around 1200 BCE, firing the clay and preserving the oldest securely dated labyrinth design in the world. Documentation sources: Saward 2003, Kern 2000, Blegen 1966. The labyrinth pattern occurs nowhere in nature; every documented instance traces back to a human hand.
The labyrinth is one of several hundred sites of this type catalogued globally; each preserves the same unicursal walking-pattern with regional variation in scale, material, and date.