57.4905°N, 18.1870°E.
Fröjel Churchyard Trojaborg is a prehistoric or medieval stone-formation labyrinth in Gotland Island, Sweden. The design is a classical 11circuit layout with 11 circuits, 12 walls, approximately 10 metres in diameter, built of stone. Documented age: Unknown (possibly medieval) (Unknown (possibly medieval)). Current condition: intact. A 12-wall double-angle classical labyrinth in the churchyard at Fröjel on Gotland, whose name derives from 'Sanctuary of Freja' — the Norse goddess of fertility and death. Documentation sources: Saward 2003, Gotland Trojaborgs PDF. The same seven-circuit topology appears at this site as at every other classical labyrinth on Earth. 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.
The labyrinth tradition spans at least 4,000 years of documented practice across northern Europe, the Mediterranean, the British Isles, North America, and the Indian subcontinent.