La Loica and La Tagua cabins (by Croxatto and Opazo Arquitectos) are perched high above an otherworldly Pacific coastline in Chile; while Malek Alqadi's Folly cabins are in the southern Californian desert. Here, "the thick walls and pitched roofs of the insulated cabins make the location bearable year-round," says the architect. Meanwhile Sigurd Larsen's treetop cabins in Denmark can stand extreme weather because they have insulation and thick glass walls.