Cavernous but wide open, dark and heavy but bright and spacious, this incredible undergound house is the ultimate expression of architectural opposites fused into a single spectacular earthen living structure buried in the mountainous ground of the Swiss Alps.

This dazzling house design by Senosiain Arquitectos was patterned after a shell – as if you could not tell.

This design by Atelier Tekuto bears a strong resemblance to Frank Gehry’s first piece of more avante garde architecture – and arguably has Frank Lloyd Wright-esque elements of spatial progression.