Washington’s big-name parks get all the hype, but what about the hidden gems no one’s talking about?
Hidden away from the crowds, these lesser-known spots offer epic views, secret trails, and unexpected adventures.
Think quiet beaches, mountaintop lookouts, and maybe even a cave or two—all without the chaos and the crowds.
If you’re planning a road trip and want to skip the packed parking lots, these underrated state parks are calling your name!
1. Crawford State Park Heritage Site – Pend Oreille County
Crawford State Park Heritage Site sits in Washington’s far northeastern corner, just a few miles from the Canadian border in Pend Oreille County.
This tiny park is known for Gardner Cave, a 2,072-foot limestone cavern filled with wild rock formations like stalactites, stalagmites, and flowstone.
Guided tours are the only way in, but it’s worth it, especially when you stand in total darkness and hear your voice bounce off the walls.
Outside the cave, there’s a picnic area surrounded by tall pine trees, and you’ll probably spot deer or maybe even a moose if you’re lucky.
(Gardner Cave normally closes in September and usually reopens in May.)
2. Fields Spring State Park – Asotin County
If your route takes you southeast, consider a detour to Fields Spring State Park in Asotin County—it’s off the radar and full of charm.
Perched over 4,000 feet in the Blue Mountains, the park offers next-level views, especially in fall when the hills light up in gold and orange.
You’ll find miles of trails for hiking and biking, and when winter hits, it turns into a playground for cross-country skiing and snowshoeing.
Fun fact: The park has a cozy little lodge you can rent, and it feels more like a secret cabin getaway than a state park stay.
3. Jarrell Cove State Park – Mason County
Next is Jarrell Cove State Park in Mason County, the go-to place for coastal views and coastal fun.
This chill spot sits on Harstine Island in the South Puget Sound and is packed with coves, inlets, and dreamy forested shoreline.
Thanks to its super cute marina and boat slips where you can stay overnight, it’s a favorite for kayakers, crabbers, and anyone who loves boating.
Keep your eyes peeled for seals, otters, and bald eagles while you picnic under Douglas firs or comb the beach for shells during low tide.
4. Rasar State Park – Skagit County
Then there’s Rasar State Park in Skagit County, a peaceful green area situated right along the wild and winding Skagit River.
This park is perfect if you like fishing, skipping rocks, or just chilling out by the water with a mountain view in the background.
There are easy trails through meadows and mossy forests, plus a cool wooden bridge that looks like a page out of a storybook.
For camping fans, this spot offers quiet, roomy sites and the option to rent a cabin if you’d rather skip the tent.
5. Alta Lake State Park – Okanogan County
Craving sunshine and sweeping mountain views? Alta Lake State Park in Okanogan County has you covered.
It’s set between steep rocky cliffs and a glassy lake that’s great for swimming, paddleboarding, or floating around like a human marshmallow.
There’s even a boat launch if you want to get out on the water, and a nearby golf course just a short walk away.
The landscape feels almost desert-like in summer, so pack sunscreen, bring water, and soak in those golden hour lake views.
6. Columbia Hills Historical State Park – Klickitat County
Heading down to Klickitat County, Columbia Hills Historical State Park is where epic scenery and ancient history collide.
The hikes here serve up stunning views of the Columbia River Gorge, with spring wildflowers that turn the hills into a giant watercolor painting.
But the real star here is the petroglyphs—ancient rock carvings made by Indigenous people, including the famous Tsagaglalal or “She Who Watches.”
Don’t miss the chance to see them up close on a guided tour, and if water sports are your thing, the easy river access is a bonus.
7. Sequim Bay State Park – Clallam County
Make your way to the Olympic Peninsula and unwind at Sequim Bay State Park, a chill coastal gem in Clallam County.
This laid-back park hugs the shoreline of a calm bay, making it ideal for clamming, beachcombing, or just watching the tide roll in.
A section of the Olympic Discovery Trail runs right through the park, so bring your bike or walking shoes and enjoy the breeze under the big trees.
It’s a great basecamp for exploring nearby Sequim or Hurricane Ridge, or simply stay put and enjoy what this state park has to offer.
8. Iron Horse State Park – Kittitas County
If you’re into long trails and old-school railroads, then Iron Horse State Park in Kittitas County is a total must.
This massive park follows the old Milwaukee Railroad line for over 100 miles through forests, valleys, and even the pitch-black Snoqualmie Tunnel.
It’s incredible for biking, hiking, and horseback riding, with tons of scenic stops and historic train trestles along the way.
Bring a flashlight if you’re heading into the tunnel as it’s over two miles long and will give you goosebumps.
(Snoqualmie Tunnel normally closes over the winter and usually reopens in May.)
9. Mount Spokane State Park – Spokane County
To wrap things up with a high-altitude bang, Mount Spokane State Park in Spokane County is all about those big mountain adventures.
This is one of Washington’s largest state parks, with nonstop adventure from wildflower hikes in summer to snow sports in winter.
There are dozens of forest trails with gorgeous views here, and one even takes you to a historic stone lookout tower at the summit.
And if you’re into stargazing, the sky up here on a clear night feels endless—no city lights, just you and a sky full of stars.
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