3D Glamping Retreat: Opal Dome, Hot Tub, Sauna & BBQ near Seattle

Welcome to The Opal Dome @ 3D Glamping Retreat — our name comes from three unique domes hidden in the forest: Mirror Dome, Opal Dome, and Crystal Dome, offering a truly “3D” experience — Design, Diversity, and Discovery.

Made for the moments that matter — birthdays, anniversaries, honeymoons, family getaways, a father-son boys' night, a mother-daughter girls' night, a bestie trip, or a friends' reunion night. Come as you are, leave with a story.

The Opal Dome’s semi-transparent gradient shell offers a warm glow by day and dreamy views by night. Inside, enjoy a queen bed, AC, and cozy lighting. Shared amenities: hot tub, sauna, outdoor kitchen with showers, and game room — perfect for a relaxing glamping escape. Opal Dome – Unique Glamping Experience with Modern Comforts Escape to our Opal Dome — a cozy, semi-transparent geodesic dome designed for a magical retreat under the stars. Nestled on a private deck, this unique space blends nature and comfort with a Queen-sized bed, air conditioning, soft lighting, and panoramic views of the surrounding forest. Guests can enjoy access to a shared outdoor kitchen, hot tub, sauna, and game room. Perfect for couples or solo travelers looking for a peaceful yet luxurious getaway. Guests have exclusive access to the Opal Dome and its private deck area. Shared amenities include the outdoor hot tub, sauna, kitchen (with stove, microwave, fridge, and sink), outdoor dining space, and the game room located in the garage (with pool table, ping pong, arcade machine, and automatic mahjong table). One free parking is available on-site. We live on the property and are happy to help if anything comes up. We respect our guests’ privacy but are always available if you need assistance. Feel free to message us anytime through the app. For urgent matters between 11:00 PM and 8:00 AM, please call us directly, as we may be resting during those hours. The dome is semi-transparent during the day but fully private at night with curtains installed. The dome is located on a shared deck with two other domes—please be respectful of other guests. Quiet hours are from 11:00 PM to 8:00 AM. The hot tub is shared. Please limit your hot tub session to 20–30 minutes for safety and to allow fair access for other guests. In summer evenings, you might notice the occasional mosquito — we provide electric insect repellents in each dome for extra comfort, and recommend bringing your favorite repellent if you’d like. Pathway lighting is available at night, but please watch your step. One free parking is available near the gate; please park in designated areas only. Extra vehicles are $20/night and require prior approval. Visitors also require approval and are not allowed to use the hot tub, sauna, or game room. No smoking and no parties allowed.