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.
"Louis Kahn’s unbuilt Hurva Synagogue, as rendered by Kent Larsen for the book Unbuilt Masterworks, a collection of digital constructions of Kahn’s proposals." Without even knowing that this is a synagogue, this immediately looks very peaceful and calm.
The Akrafjorden Hunting Lodge is just 35 square meters in size, but can sleep up to 21 people thanks to a smart design that places the beds in a circle around a central fireplace, allowing them to double as seating during the evenings.