59.5760°N, 24.7610°E.
Aegna Island Labyrinth, Tallinn is a prehistoric or medieval stone-formation labyrinth in near Tallinn, Estonia. 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: damaged. A partly preserved stone labyrinth on Aegna island near the Estonian capital Tallinn — a small forested island in the Gulf of Finland that has served as a military fortification since the Russian Empire. Documentation sources: Kraft & Selirand, Caerdroia 23. A figure that resolves into a single unbroken line when traced from edge to centre and back. 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.