Bellingham Treehouse

This treehouse near Bellingham sits engineered between two large Douglas fir trees, built to flex with the wind rather than fight it. Guests sometimes hear a faint thumping when there's a breeze, a sign the trees are moving independently as designed, not a cause for concern. The one-bedroom structure sleeps two and comes with a hot tub, a home movie theater, a large deck with a fire table, and wide forest views.

The property sits near a waterfall, and that water sound mixes with some highway noise audible from the deck and hot tub, though closing the windows cuts it out entirely. Access is via keypad, available 24 hours, and the treehouse sits atop a steep paved hill that's generally plowed in snow; a 4WD/AWD vehicle is recommended when conditions turn, and there's an option to park at the bottom and walk up five minutes, or request a shuttle.

This is a smoke-free, pet-free space that uses hypoallergenic, eco-friendly laundry detergent, and all guests must sign a waiver given the unique build. No children, no pets, no parties or photo shoots, and no candles, incense, or open flames. Complimentary EV charging (220V, 12-35 mph) runs from 10am to 5pm. Rates start at $200 a night and run up to $737 depending on dates. Wi-Fi is included, and the booking page is on the official site.