57.8400°N, 18.9200°E.
Nyhamn Trojaborg is a prehistoric or medieval stone-formation labyrinth in Gotland Island, Sweden. The design is a classical 7circuit layout with 7 circuits, 8 walls, approximately 7 metres in diameter, built of stone. Documented age: Modern (holiday cottage area) (Modern (holiday cottage area)). Current condition: intact. An 8-wall single-angle classical labyrinth on the shoreline at Nyhamn, where summer cottages mark a site that once served as a fishing harbor. Documentation sources: Gotland Trojaborgs PDF. Listed in the surveyed catalogue as one node in a larger global registry of the same single design. 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.