Grotte di Osimo in Osimo, Italy
Under the ancient city of Osimo lies a dense network of tunnels, passages, and underground environments dug at various levels. They are connected vertically to each other by wells or chimneys. The labyrinth of caves connects to a few notable palaces such as Palazzo Campana, Palazzo Riccioni, Palazzo Simonetti, and Palazzo Gallo. The 88 caves and a dozen narrow underground tunnels were most likely used as escape passages, food storage facilities, or for the passage of water. The mystery……
















