Hårtwood

Tucked away in 15 acres of tranquil forest in Ontario's Haliburton Highlands is Hartwood, the flagship property of Fort Treehouse Co. This off-grid retreat is more than just a place to sleep — it’s a design-driven escape that celebrates architecture and wilderness alike. With three stunningly crafted treehouses, a Nordic spa and a communal lodge known as the 'Hytta', Hårtwood invites you to experience the rhythms of the forest in pure comfort.

Designed with sustainability in mind, Hårtwood is entirely off-grid. Solar panels power the site, while tree-friendly anchoring systems minimise impact and green roofs support local biodiversity. This design philosophy puts nature first while maintaining high comfort standards. Built on the same premises as the stunning off-grid escape The Baltic Treehouse in Minden, the Hårtwood retreat is another project by Fort Treehouse Co., the brainchild of Lauren and Cam Green. They infuse each build with their signature balance of wild immersion and thoughtful, luxurious design.

Each treehouse at Hårtwood has its own unique character and purpose. Treehouse 001, the largest of the trio, is a multi-level retreat sleeping up to five people. It features three bedrooms, a rooftop terrace, a barbecue and an outdoor fire pit. Suspended among tall hardwoods, it provides expansive views and a cosy yet spacious atmosphere that is perfect for families or groups of friends. Treehouse 002 offers a more intimate experience with a spiral staircase leading guests through the treetops to a minimalist, one-bedroom space with its own rooftop terrace. It’s an ideal retreat for solo travellers or couples seeking tranquillity above the forest floor. The third and most remote treehouse, 003, is nestled deep among mossy boulders and hardwoods. Though secluded, it comfortably accommodates four guests and strikes the perfect balance between wild immersion and thoughtful design.

The experience at Hårtwood extends beyond the treehouses themselves. Ro, the on-site Nordic spa, is a wellness sanctuary bathed in forest light, complete with a wood-fired sauna, cold plunge pool and hot tub with forest views. It’s an elemental experience designed to recharge both body and mind. At the heart of the property lies The Hydda, a community gathering place that blends rustic charm with contemporary functionality. Here, guests can enjoy locally roasted coffee, carefully selected provisions, and a curated selection of Canadian goods. Seasonal events and private dining experiences ensure that The Hydda remains a lively yet grounding part of the Hårtwood experience.