31. Gulliver’s Travels Park, Kawaguchi, Japan
Constructed in the shadow of Mt Fuji, this theme park opened in 1997. Despite financial help from the Japanese government, it lasted only 10 years before being abandoned.
32. Mirny Diamond Mine, Eastern Siberia, Russia
The world’s second largest man-made hole, Mirny was constructed by Stalin to satisfy the Soviet Union’s demand for industrial diamond. Further digging efforts were eventually abandoned when it became too difficult to continue digging this massive hole.