thumb|300px|The entrance to Retretti. Retretti was a major art museum in Punkaharju, Finland. It was unique in that most of its exhibition space was underground. The man-made caves total and reach a depth of .
thumb|300px|The entrance to Retretti. Retretti was a major art museum in Punkaharju, Finland. It was unique in that most of its exhibition space was underground. The man-made caves total and reach a depth of .
There was a souvenir shop and a restaurant in the premises.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).