Mt. Rainier National Park: Technically it’s still an active volcano. The mountain lakes are amazingly clear.
North Cascades National Park: The Cascade Mountains traverse north / south. We protect the south end and the Canadians actually have the north end.
Olympic National Park: Ferns, redwoods, black sand beaches…in all, a very diverse place to check out.
San Juan Islands National Historical Park: The US almost went to war with Canada over a border dispute and a pig.