Located in Takilma near Cave Junction, Out ’n About Treehouse Institute and Treesort (300 Page Creek Rd., Cave Junction 97523, 541/598-2208 or 800/200-5484, www.treehouses.com) is a unique lodging option that’s worth driving a bit out of your way from the Oregon Caves. After all, how many bed-and-breakfasts do you find in a tree house?

This comfortable rural retreat blends the whimsy of the 1960s with 21st-century creature comforts. The 10 well-appointed tree-house guest rooms are bolted to 100-year-old white oaks, some 18 feet above the ground.

Should you have misgivings about the structural integrity of these accommodations, be advised that the innkeeper gathered nearly 11,000 pounds of his friends to stand on the several units simultaneously — 35 times the weight requirements of the local code. Those desiring a more down-to-earth lodging option can stay in a peeled-fir cabin with a cozy woodstove.

For the deluxe treatment, reserve a 300-square-foot structure built of redwood and Douglas fir that features a sink, a tub, a fridge, a queen-sized futon, a loft, and a 200-square-foot deck with mountain views. The “treepee,” a tepee done up in Out ’n About style, is always popular with the kids.

Horseback trail rides, trips to the best Illinois River swimming holes, and white-water rafting trips can be arranged through the management. Or swim in the river that runs through the property.

Rates are $120 and up with a two-night minimum stay and include continental breakfast. Your stay here will help you better understand tree houses, treeology, and treeminology, and like many other guests, you may well leave a “treemusketeer.”

Tours of Out ’n About tree houses are offered on the hour noon–2 p.m. Monday, Wednesday, and Friday, April–October, and cost $5 adults and $2.50 children under 12. Call ahead to reserve spaces for the tours.