Thanks for the comments. A fun fact is that I am standing right in front of the mirror, but I am not visible. Because of the curved shape and the seams/joints between the three mirrors, there is one narrow point where I disappear if I make myself very slim and keep my arms close to the body.
The sculpture is made by Dan Graham, and is part of "Artscape Nordland". Nordland is one of three countys in norhtern Norway, and each municipality in the county has one sculpture, made by renowned international artists. Some of the sculptures are easily accesible, others are more or less hidden, and you sometimes have to go long walks to find them. It's a brilliant idea, and I am grateful for the work of the enthusiasts that got the idea and accomplished it.