出典:Wikipedia
出典:『Wikipedia』 (2011/07/04 17:30 UTC 版)
Ballast Key is an island in the Florida Keys in Monroe County, Florida, United States. It is the southernmost point of land in the contiguous United States. It is also the only privately owned land within the boundaries of the Key West National Wildlife Refuge, and as of July 2011 is being offered on the real estate market for US $13,800,000.