Mount Washington, or Agiocochook, is New Hampshire’s highest peak and the tallest mountain in the Northeastern United States, long known to Indigenous peoples who regarded its summit with spiritual reverence. Recorded in European accounts by 1524 and first reportedly climbed by Darby Field in 1642, it became a major destination in the 19th century through the Crawford Path, summit hotels, the carriage road that became today’s Auto Road, and the Cog Railway. The mountain is equally renowned for extreme weather, including a 1934 world-record wind speed of 231 mph, and for its long scientific legacy through pioneering weather stations and the Mount Washington Observatory.