Scorpios Museum
Incredible and unexpected family museum that displays manufactured reproduction of monuments from the cyclades. The sculptures are arranged in a garden, really nice to walk into. Every single item there was built by the father (a local fisherman) over several decades, as a hobby! The daughter is hosting the visits. If you can, try their wonderfully locally distilled liquor!
The cache
It's at the provided coordinates. No pen inside. It's not within the museum, and accessible 24/7. See spoilers if trouble finding the cache
To put back the changelog, it's easier to put the paper in the red lid before.
If there's a problem with the cache, the museum owners can do the maintenance (adding there username soon)