Situated on a dramatic stretch of volcanic coastline where long, inaccessible fingers of lava jut into Sagami Bay, the change in levels across the site and the views out to sea are central to the project’s design. Set on a raised platform, the house is positioned so that the main living areas have uninterrupted views out to sea. Services and storage areas are arranged around the perimeter, allowing the central accommodation to be configured as a single continuous, open and flowing sequence. The framed structure creates seven rectangular bays. These top-lit spaces can be subdivided by means of sliding screens, while adjustable louvres control the quality of natural light through the glazed roof. Full-height glazed sliding doors line the perimeter, allowing the living spaces to open out on to adjoining terraces, thus eroding divisions between inside and out. The surrounding landscape combines new elements with existing features. Mature trees line the cliff top, while newly planted camphor trees provide privacy from the road. Stone lanterns, some dating from the eighth century, are positioned around the house and a small tea house of the late Edo period, brought from Shimane prefecture, completes the overall composition.