San Juan Island NHP

San Juan Island National Historical Park is located on San Juan Island in Puget Sound. The islands are divided between US and Canadian Territories, and were the site of an infamous dispute between the British and Americans who both laid claim to San Juan Island. The islands were settled more than 11,000 years ago, and the original inhabitants were ancestors of the Coast Salish tribes. Today the park commemorates the history of the islands, and preserves 2,000 acres and one of the last known habitats of the island marble butterfly and rare open prairie land. The main feature of the park are the British and U.S. Army camps during the Pig War, a boundary dispute over the ownership of the island in the mid 1800s.