In the Basque sculptor Eduardo Chillida Tindaya Mountain, on Fuerteventura. Chillida's idea was to create a large empty void inside, with dimensions 50 x 50 x 50 meters, with an entrance tunnel of 200 meters and two skylights.
Gravity Home: Sunday Inspiration The Church of San Giovanni Battista in Mogno, Switzerland. Designed by architect Mario Botta who created a pattern with layers of Peccia marble and Vallemaggia granite. (via Design Milk)