9. Uninhabited Island in Southwest Florida, U.S.A.
These small domed structures were built in 1981 on Cape Romano off the coast of Florida in the U.S. They were the summer home of oil producer Bob Lee before falling into disrepair. What their fate will be today is still uncertain.
10. Abandoned Mill, Italy
This mill in the Valley of the Mills in Sorrento, Italy was abandoned in 1866. This mill ground wheat, and a sawmill operated nearby as well. The mill was isolated from the sea by the construction of Tasso Square, which raised the humidity in the area and caused it to be abandoned.