The building where Holmes lived in the film "The Adventures of Sherlock Holmes and Dr. Watson," episode "The Hound of the Baskervilles," is nothing more than the ruins of a Dutch-style mill. The mill was presumably built in the 19th century, and the Laisilla farmstead nearby was first mentioned in 1645. There are quite a few similar mills preserved in Estonia, and finding the right one was not easy. Some of them have been restored and are used, for example, as restaurants, while others continue to slowly decay. It is probably too late to restore this mill.

And it was in this building that Sherlock Holmes hid and conducted his observations. Nearby, the fugitive convict Selden was killed by the Hound of the Baskervilles. It must be said, Holmes’s comfort was quite lacking.

Not only was there a draft from all four sides, but there was no roof either. And it was easy enough to get hit on the back of the head by a stone — in the photo, you can see how the main entrance collapsed, and the place where Watson climbed out is half-blocked.

Frankland’s spyglass, through which Watson first saw this building, had an amazing property: it changed the viewing angle by about 90 degrees. That is, at first, with the “naked eye,” we see the mill from the west side, but “through the spyglass,” we see it from the north. The house visible to the right of the mill (by the way, whose house is this and why didn’t Watson take an interest in its inhabitants?) has now been extended on the left side, and from this point, only the top of the mill is visible.

Sources:

https://www.221b.ru/geo/6-kantsi.htm

https://dubikvit.livejournal.com/26094.html