I see a large wooden torii gate, which is a clear indicator of a Shinto shrine in Japan. The presence of numerous paper lanterns arranged in rows suggests a festival or a special event at the shrine. The architecture and the surrounding dense, well-maintained forest are characteristic of major urban shrines in Japan. I am quite confident this is Meiji Jingu in Tokyo.

Country: Japan, City: Tokyo.
Confidence: High.

then: guess