Highly detailed 3D model of a Slavic wooden fortress (gród) surrounded by a defensive palisade and a moat. The fortress features tall watchtowers, a central hall with a thatched roof, and small wooden houses within the walls. The gate is reinforced with iron details, and the paths inside are lined with cobblestones. Add details like market stalls, barrels, and fire pits, creating a vibrant, lived-in atmosphere. Use realistic textures for wood, stone, and vegetation.