Mount Washington, called Agiocochook by some Native American tribes, is the highest peak in the Northeastern United States at 6,288.2 ft and the most prominent mountain east of the Mississippi River.
The mountain is notorious for its erratic weather. On the afternoon of April 12, 1934, the Mount Washington Observatory recorded a windspeed of 231 miles per hour at the summit, the world record for most of the 20th century, and still a record for measured wind speeds not involved with a tropical cyclone.
The mountain is located in the Presidential Range of the White Mountains, in the township of Sargent's Purchase, Coös County, New Hampshire. While nearly the whole mountain is in the White Mountain National Forest, an area of 60.3 acres surrounding and including the summit is occupied by Mount Washington State Park.
The Mount Washington Cog Railway ascends the western slope of the mountain, and the Mount Washington Auto Road climbs to the summit from the east. The mountain is visited by hikers, and the Appalachian Trail crosses the summit.