The Grand Lake Poolhouse Project comprises a pair of lakeside pavilions containing a pool and spa in north-eastern Oklahoma, overlooking the Grand Lake of the Cherokees. An existing clearing in the tree-lined hill is cut into with a single-storey volume running parallel to the lake. A smaller volume is placed perpendicular to it, set slightly apart from its companion volume to capture a patio at the meeting point of the two axes. An ‘L-shaped’ roof plane connects all internal and external space, creating a consistent datum line that references the lake’s horizontality. To preserve views across the site and enhance swimmers' views from within, the longer glazed pavilion is embedded into the undulating landscape, while the smaller pavilion – containing massage and wash rooms – offers a counterpart to its more visually-open neighbour with its intimate proportions and protective charred timber cladding. Together, the two volumes read as a distinct but unified pair; a discreet addition to the broader landscape.