Grass roof, facets and glass walls

Grass roof, facets, glass walls, a rocky beach, lots of light- what an amazing mix of my favourite things! Another house on the 'I'd like to live here' list.
And I'm dying to know what beyond that door into the hill in the second photo. via archdaily.com

Architects: Salto AB
Location: Aseri, Estonia
Project team: Maarja Kask, Karli Luik, Ralf Lõoke
Client: Private
Project area: 300 sqm
Project year: 2006
Photographs: Salto AB