Plum Island

Plum Island, a small island off the tip of Long Island, New York, is home to a federal Animal Disease Center that has studied dangerous livestock pathogens such as foot-and-mouth disease since the 1950s. Reachable only by government ferry and closed to the public, its isolation and biosecurity — chosen precisely to keep contagions away from the mainland — have made it a fixture of conspiracy lore.

• New York
  The Empire State, from Manhattan to the Adirondacks related