Located on Orcas Island, Moran State Park’s infrastructure was built largely by the Civilian Conservation Corps, a New Deal organization that improved many Washington State parks. The features of Moran were built using native materials from the site, including the lookout at the summit of Mt. Constitution—but if you don’t feel like climbing, this also includes shelters and other buildings.

Another Civilian Conservation Corps project was Deception Pass State Park—but if you really want to learn more about this post-Depression project (and you like your exploration a little more guided), this park has converted a former bathhouse into the Civilian Conservation Corps Interpretive Center museum right near the Bowman Bay campground. Plus, there’s that famous bridge.

The northernmost Admiralty Inlet fort is now a network of trails with stopoffs for whale watching, paragliding, and even fishing. Attractions include abandoned bunkers, an old water tower, and big water views—and if you want a longer hike, you can reach Ebey’s Landing or even farther to the Island County Historical Museum in downtown Coupeville. The campground itself is a jumping-off point to a ton of park trails of various commitment levels.

Fort Worden is located in the extremely charming town of Port Townsend, so if you’re mainly in it for historic architecture, there are plenty of chances to pop out and explore some of the best-maintained Victorian architecture in the Pacific Northwest—the city is densely packed with it.

Worden is activated as heck, with its prettier Victorian buildings, like officers’ quarters, transformed into arts spaces, wedding venues, and retreat housing. Like Casey, there’s also a cute lighthouse. If you’re looking for that crunchy, abandoned feel, though, head up to Artillery Hill for some old military infrastructure.

Worden has two campgrounds: a more beachy one below and a more forested one above.

Flagler is the most sprawling of the old Triangle of Fire forts, with a level of exploration to suit pretty much everyone—former barracks, administrative buildings, and a hospital are activated with historic programs, museums, retreat housing, scout camps, and tours, are easy to access from the road. A couple of former bunkers are right on the road, too. But the deeper you’re willing to go, the more remote and abandoned places you’ll find. Also: Up at Marrowstone Point, there is, of course, a lighthouse.

Some campsites are basically beachfront, while others tuck away on a high bluff overlooking the water.

Manchester State Park includes the former site of Middle Point, an early-1900s Coast Artillery Corps fort—although it was only up for about 10 years before the corps decided Fort Ward was sufficient. In addition to the standard batteries, the park includes a large brick torpedo storehouse with an ornate design, formerly storage for underwater mines but later an officer’s club, barracks, and mess hall.

With most of its original Civilian Conservation Corps-constructed infrastructure still around on the west side of the park, Twanoh is, according to Washington State Parks, “one of the most intact examples of Great Depression-era park architecture in Washington’s state park system.”

Like Moran State Park, the infrastructure of Millersylvania State Park was largely built by the Civilian Conservation Corps with materials from within the park and the surrounding area. The hand-built structures were made from logs from the park and sandstone from Tenino, including picnic shelters, bathhouses, and a caretaker’s home.

We could make separate entries for many locations in Mount Rainier National Park—which is, collectively, a national landmark, with some other landmarks nestled inside it. Its iconic parkitecture includes Longmire, with the the park’s first 1916 headquarters building (now a museum) and second 1930 headquarters building (now offices and a wilderness information center). The Nisqually Entrance was the park’s first entrance gate, built in 1911, exemplifies the National Park Rustic style popular in national parks at the time (see also: Yellowstone). The 1908 Oscar Brown cabin, the only cabin from its era that still exists.

There’s a whole lot more to explore here—historic resources in this park even have their own Wikipedia entry—and four campgrounds to choose from, depending on your preferred location and infrastructure needs.

Cape Disappointment State Park—the site where John Meares couldn’t find the Columbia River—is also the former home of Fort Canby, and has many of the explorable features of the other former military forts on this list, like former gun batteries. It also has a lighthouse.

There are all kinds of layers of history at Columbia Hills, which is right on the edge of the border between Washington and Oregon. First, it’s geographically significant, with unique rock formations created at the end of the last Ice Age—Horsethief Butte is almost like a historic building. It’s also a highly significant cultural site for local American Indian tribes, and is peppered with pictographs and petroglyphs, including Tsagaglalal. The mark of Euro-American settlers is also clear: Horsethief Lake was created by the Dalles Dam, and parts of the Dalles Mountain Ranch, including farm equipment, is still around for hikers to explore.

As for the camping, it’s relatively limited, but interesting: four standard campsites, eight partial-hookup sites, four walk-in sites, a teepee, and two platform tent sites,