San Juan Island, Washington

The San Juan Islands are a part of the San Juan Archipelago in the northwest corner of the continental United States. San Juan Island is the second-largest and most populous of these Islands. It has a land area of 55.053 sq mi (142.59 km²). The name "San Juan" comes from the 1791 expedition of Francisco de Eliza, who named the archipelago Isla y Archiepelago de San Juan to honor his patron, Juan Vicente de Güemes Padilla Horcasitas y Aguayo, 2nd Count of Revillagigedo. One of the officers under Eliza's command, Gonzalo López de Haro, was the first European to discover San Juan Island itself. The American explorer Charles Wilkes renamed the island Rodgers Island, but the Spanish name was kept on British charts and became the standard. Mount Dallas stands on the western side of the Island at 1,086 feet (331 meters).