Atmospherically dark and bleak, this abandoned labyrinth is Hungary’s largest tunnel system, that twists and turns underneath Budapest for 32 kilometres (19,8 miles). The complex system includes cellars, chambers and countless corridors. There is even an underground chapel with minimalist sublime arches that was made a century ago originally for religious miners. This labyrinth was carved out of limestone, due to which it is always 9 degrees celsius and is often damp. Its architectural style is extremely simple, giving it a timeless effect. The only feature of its walls are the clusters of aged and rusty cables and pipes winding around the corridors. Although it has had countless functions throughout the years, this cellar complex has been abandoned for decades, apart from when national and international film productions hire it for shoots.