This San Juan locale is the site of the family mausoleum for the McMillin family, who built Roche Harbor, originally a village but now a resort. It’s more of a walk than a hike; a 10-minute stroll through a cemetery will take you to the family’s ornate memorial, a table and chairs surrounded by Doric columns. Each chair contains a family member’s ashes. It’s supposed to be quite peaceful in its own way.

Northern State Hospital is one of the area’s most notorious haunted places. It started as grand as any early-20th-century sanitarium could, with an Olmstead Brothers-designed landscape and its own self-sustaining town structure, complete with a farm and bakery. But it was plagued by the terrifying treatments popular in that era, including transorbital lobotomies. The facility closed in the 1970s, and some buildings are still active facilities—but many of the older, abandoned buildings are part of the Northern State Recreation Area, including barns, milking shed, and cannery. Visitors can also (respectfully) explore the cemetery, which is the final resting place for about 1,500 patients. It’s a favorite spot of abandoned-place photographers.

Off Barlow Pass, a trail leads to the remains of Monte Cristo, originally a gold and silver mining town founded in the 1890s but abandoned in 1907. It was a booming tourist destination until flooding washed out a bridge in the 1980s, and since then, hikers have had to ford a river to get to the town. A long toxic mineral cleanup process closed this trail for a while, but it’s back in commission—with the caveat that the water contains arsenic. Some people camp out here, but again: the arsenic.

Buildings left over from both its mining town days and its time as a resort are visible once hikers reach the townsite, as well as some mines.

Rattlesnake Lake hides a secret underneath: the remains of Moncton, the town it flooded out of existence in 1915 after the construction of Masonry Dam. Fall, according to the Washington Trails Association, is actually the ideal time to view the ghost town—the water is low enough to catch a glimpse of tree stumps, foundations, and even a fireplace.

This south King County hike takes you through a former mining company town—the site of one of Washington’s worst mining disasters in 1894, when 37 miners suffocated after a fire in the mine that appeared to have been started intentionally. Like Wellington, it chugged on for a little while after the disaster, but by the 1920s, the town was largely abandoned. Some remnants still remain, like a mining cart, a grate-covered mine shaft, a cemetery.

Liberty was founded way back in 1867 after gold was found in the surrounding creeks. It’s only partially a ghost town; while the population dwindled after the gold did, a few people still live there (be respectful!). But a lot of historic buildings remain, added to the National Register of Historic Places in the 1970s. There’s no official trail, but as the WTA notes, there’s lots of big, open space to explore.

If you can find a day with a very low tide, you can walk a few miles miles north along the beach to see a ship graveyard—and while multiple ships are here, one 1800s ship ends up being the centerpiece, with at least the shape of its hull still intact. The story of that ship isn’t especially spooky, but it’s easy to imagine some stories. Walk a full five miles and arrive at Mukilteo’s Point Elliott.

The ships themselves are on private property, so don’t get too close, but there’s plenty of beachfront for viewing them from a distance. And seriously: Make sure that tide’s going to be low for a while.

This one’s a little out of town, but if you’re passing by the Colville area, this half-mile trail will take you from an 1847 mission to the site of Fort Colville, built in 1825. Here, there’s a small graveyard that might actually be bigger, but it’s apparently hard to tell after all the grave robbery. Some graves are marked and some are unmarked, so watch where you step if you’re a superstitious type.