This looks a lot like the maps that came with the old Sherlock Holmes Infocom game: https://en.wikipedia.org/wiki/Sherlock:_The_Riddle_of_the_Crown_Jewels https

This looks a lot like the maps that came with the old Sherlock Holmes Infocom game: https://en.wikipedia.org/wiki/Sherlock:_The_Riddle_of_the_Crown_Jewels https://en.wikipedia.org/wiki/Sherlock:_The_Riddle_of_the_Cr... ... which makes sense I guess.