59.2830°N, 18.9170°E.
Sandhamn Labyrinth, Stockholm Archipelago is a prehistoric or medieval stone-formation labyrinth in Stockholm Archipelago, Sweden. The design is a classical 7circuit layout with 7 circuits, 8 walls, built of stone. Documented age: 16th-17th century (16th-17th century). Current condition: intact. A stone labyrinth on Sandhamn (Sand Harbor) in the outer Stockholm archipelago — historically one of Sweden's most important pilot stations, where ships waited for pilots to guide them through the treacherous approaches to Stockholm. Documentation sources: Kraft 1983. A pattern with one entrance, one path, and no choices — repeated by unrelated cultures across thousands of years. 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.