Diablo Lake Overlook
Turquoise water from glacial flour.
North Cascades National Park
'The American Alps': jagged peaks, over 300 glaciers and the startling turquoise of Diablo Lake, along a spectacular summer highway.
This wild park sees few visitors. The North Cascades Highway runs over Washington Pass, with Diablo Lake's overlook the top stop.
- Best Time
- July to September
- Time Needed
- 1–2 days
- Cost Level
- $$$$
- Open
- Year-round
- Getting There
- About 2.5 hours from Seattle.
What to See
3 of 3 are freeMaple Pass Loop
Larches turn gold in late September.
Washington Pass
Liberty Bell Mountain from an overlook.
Know Before You Go
- Highway 20 closes in winter.
- Backcountry permits are required.
Where to Stay
Stay in Winthrop or Marblemount.
Where to Eat
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Last checked 2026-11-01. Part of the Pacific Northwest list.