This image of a refurbishment in Buckinghamshire, posted by Interior Therapy, has been saved more than 91,000 times by Houzz users. The classic but modern space features grey tiles and a personal typography poster on the wall
Retaining wall idea
puien van geheime woonkamer naar leefkeuken, hoeft niet open maar wel mooi dun
Triangular grass patch
perimeter raised beds - Google Search
Google Image Result for http://www.gardenviews.ie/Garden-Designs/new-lawn-%26-decking-glas.jpg
Paint Color - Benjamin Moore Rockport Grey. I think this is the one.
Raised lawn with reclaimed sleepers