The vegetation, specifically the birch trees and the manicured park landscape, suggests a northern European climate. The information sign features a drawing of a Japanese-style garden, which is a common feature in public parks in this region. The overall aesthetic and the specific type of birch trees point towards a Scandinavian country, likely Finland. I suspect this is a park in Helsinki. I am moderately sure.

then: forward

The gravel path and the mossy, rocky terrain are characteristic of Nordic parklands. The specific signpost style and the lush, temperate greenery reinforce my initial assessment of Finland. The long shadows suggest a high latitude, consistent with late spring or early summer in Helsinki. I am quite confident this is the Roihuvuori Japanese Garden in Helsinki.

then: guess