Norwegian artist Per Kristian Nygård attempted to bring the outside inside with this installation that involved building grassy mounds inside an Oslo gallery (+ slideshow).

Per Kristian Nygård created the work, named Not Red But Green, for the white-space setting of Oslo's No Place gallery. The piece, which appeared as if an oversized lump of turf had been crammed into a tiny room, was on show during August.

The Trondheim-based installation artist – whose work explores the limitations and possibilities of space – constructed the unlikely landscape as an antithesis to the organised architectural environment.

The artist told Dezeen the work was "seemingly meaningless and confusing – as a contrast to the all-encompassing meaningful and personalised we surround ourselves with, for example the programmed urban environment, the functional objects and architecture".

"Visitors are confronted with their own intuitive and physical response to the experience of entering a space where everything's wrong but feels right," he said.

The undulations in the terrain were constructed with a wooden framework, overlaid with plastic sheeting and a thick layer of soil impregnated with grass seed.

The grass seed sprouted in the damp soil over the duration of the exhibition, and the lawn was tended and watered daily to create a moist growing environment.

The green landscape, with patches of soil visible and wispy blades of grass, appeared at one stage to be growing up the sides of the white gallery walls.

Smaller hills rose and fell around a row of narrow windows, so as not to block the sunlight from the space.

The edges of the work creeped out onto the dark grey floor of the reception area, as if inviting gallery visitors in for a hike across the miniature landscape.

At one side, the soil sloped away to make space for the gallery's wood-burning stove.

Photography is by Jason Olav Benjamin Havneraas.