Swiss architect Henri de Heller designed the extraordinary Yorkshire House in 1938–39 in an eclectic-transitional style. It is influenced by characteristics of the Modern Movement, while incorporating a bold mixture of traditional vernacular and new machine-age materials such as common bond with Flemish variant brick veneer, slate, steel structural beams, steel casement and glass block windows, and plywood doors conforming to curved walls. The house represents de Heller’s perception that grand architectural styles develop incrementally, preserving the best elements of the preceding epoch while adding the best attributes of new influences; such combinations are contextually most successful when an architect respects a region’s local materials, environmental conditions, and customs. Located in the Fauquier County seat of Warrenton, Yorkshire House retains excellent historic integrity.