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Extreme Mount Washington


More than a quarter million people visit the summit of Mount Washington each summer by car, train, or foot. But in winter, sub-zero temperatures, hurricane-force winds, blowing snow and incredible ice claim the peak, creating an arctic outpost in a temperate climate zone. Known as the Home of the World's Worst Weather, Mount Washington's winter conditions rival those of Mount Everest and the Polar regions.

This remarkable, otherworldly landscape is completely inaccessible to all but the most experience winter mountaineers... until now.

Mount Washington Observatory's newest educational offering, Extreme Mount Washington delivers the science and excitement of a Mount Washington winter to summer visitors of all ages through high-tech, hands on exhibits. Learn how rime ice forms, pilot a snowcat, see how Mount Washington Observatory scientists observe and record the infamous conditions and more. Get a taste for life in the alpine zone, no ice axes required!


Extreme Mount Washington is located inside the Mt. Washington State Park Sherman Adams Visitor Center, so it is open whenever the Visit Center is open. Hours vary by month, so please visit the Mt. Washington State Park website to plan your visit.


General Public
Adults and children 7 and older: $5
Children 6 and under: Free

Mt. Washington Auto Road and Mt. Washington Cog Railway Patrons
Admission is included in the cost of your Auto Road or Cog Railway ticket. Please present your ticket at the time of entry.

Mount Washington Observatory and ASTC Members
All supporting Mount Washington Observatory members and members of partner ASTC institutions receive complimentary admission.


Extreme Mount Washington is located inside the Mt. Washington State Park Sherman Adams Visitor Center. For directions to Mt. Washington State Park on the summit of Mount Washington, please visit our Visitor Information page.

Once at the summit, proceed inside the Visitor Center and look for the Extreme Mount Washington signage. The museum is located in the lower level of the building.


Mount Washington Observatory offers its sincere gratitude to the following foundations, corporations and individuals, whose collective generosity has made Extreme Mount Washington possible:

  • Gladys Brooks Foundation
  • Jane's Trust
  • Neil and Louise Tillotson Fund of the New Hampshire Charitable Foundation
  • Public Service of New Hampshire and the Northeast Utilities Foundation
  • Putnam Foundation
  • Anonymous
  • Charles S. Raizen Foundation
  • Cogswell Benevolent Trust
  • Samuel P. Hunt Foundation
  • The Waterman Fund
  • Thomas W. Haas Fund of the New Hampshire Charitable Foundation
  • Winthrop Charitable Gift Fund
And all of the generous individuals who supported this project, many of whom are recognized on tiles featured in a unique mosaic display within Extreme Mount Washington.

Mount Washington Observatory would also like to recognize and thank the following individuals and organizations for their support of and collaboration on this ambitious project:

  • Appalachian Mountain Club
  • Alain Comeau
  • Jeff Kennedy Associates
  • Joe Lentini
  • Gensamer Electric
  • Glen Group
  • Tom Guilmette
  • Chris Joosen
  • MegaPrint
  • Milford Flooring
  • Moss Creek Media
  • Mount Washington Auto Road
  • Mount Washington Cog Railway
  • Mount Washington Observatory Staff and Trustees
  • Mount Washington State Park
  • Mystic Scenic Studios
  • New Hampshire Department of Resources and Economic Development
  • Ken Rancourt
  • Richard Lewis Media Group
  • Neil Shea
  • TechnoFrolics
  • TownSquare Media – WOKQ/WPKQ
  • White Mountain National Forest
  • Rick Wilcox



Michelle Cruz
Director of Education
(800) 706-0432, ext. 225

Home of the World's Worst Weather
Administration: 2779 White Mountain Highway, P. O. Box 2310, North Conway, NH 03860 • Tel: 603-356-2137 • Fax: 603-356-0307 • contact us
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