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Perched on the northern fringes of Cardiff where the city begins its ascent into the Caerphilly mountains, Thornhill is defined by its steep topography and expansive views across the Bristol Channel. Developed largely from the 1980s onwards on former farmland, the area is historically anchored by the 12th-century church in neighbouring Lisvane and the old Llanishen reservoir to the south. Life here is dictated by the slope of the land; the higher you go, the closer you get to the trails of Cefn Onn Country Park, a Grade II listed garden known for its collection of rare conifers and rhododendrons. While predominantly residential, the locality is practical, served by the Thornhill Church Centre and a large supermarket, with the Cefn Onn Halt (Lisvane & Thornhill station) providing a direct rail link into the city centre that takes about fifteen minutes. It’s a quiet corner of the capital where the urban sprawl finally gives way to the ridgeway walks and the rural landscape of South Wales.