# Saunas and spas in Boulder > Made for those who prioritize deep-tissue recovery and thermal therapy as the non-negotiable foundation of their wellness routine. Source: https://www.atly.com/united-states/colorado/boulder/best-sauna-spa ## Places (4) ### 1. Infrared Salt Therapy Spacious rooms offer private sauna, cold plunge, and red light therapy in a clean, well-curated environment. Atmosphere stays quiet, calming, and serene, ideal for relaxation and health. Attention to detail creates a luxurious and peaceful experience. - Address: 825 S Broadway #50, Boulder, CO 80305, USA - Atly: https://www.atly.com/location/InfraredSaltTherapy ### 2. Isolate Float Center Float center offers clean, relaxing spaces with infrared bed, red light sauna, and cold plunge amenities. Atmosphere is unpretentious and humble, supporting a refreshing physical and mental experience. Facilities maintain high standards of cleanliness and provide a true spa setup. - Address: 643 S Broadway, Boulder, CO 80305, USA - Atly: https://www.atly.com/location/IsolateFloatCenter ### 3. The Dragontree Sanctuary Sanctuary space offers cold plunges, steam room, dry sauna, and salt room alongside a hot tub and forest rain shower. Atmosphere stays calm, peaceful, and serene with intentional design details like constellation-shaped lights. Visitors find it clean, beautiful, and well laid out for relaxation and healing. - Address: 2405 Broadway, Boulder, CO 80304, USA - Atly: https://www.atly.com/location/TheDragontreeSanctuary ### 4. Symmetry 360 Massage Boulder Small, quiet space offers a clean, relaxing atmosphere with a warm, inviting studio feel. Infrared sauna and cold plunge add unique wellness options. Skilled therapists provide therapeutic, well-targeted massages with helpful advice for ongoing care. - Address: 1100 Spruce St # 202, Boulder, CO 80302, USA - Atly: https://www.atly.com/location/Symmetry360MassageBoulder ## Get this data directly This page comes from the Atly Places API, which scores close to 2 million places against more than 1,400 intents — "nice view", "work friendly", "gluten free", "dog friendly" — from what real reviewers say, with the statements behind every score. - **MCP server:** `https://agentic-api.atly.com/mcp` — connect it in ChatGPT or Claude. Nothing to install. - **Guide for agents:** - **OpenAPI contract:** - **No key needed to start.** `POST https://agentic-api.atly.com/v0/keys` with an email raises the quota. Coverage is densest in the United States, with pockets in Mexico, Israel and Thailand.