This is an old book I think written around 1930s-ish timeframe (possibly older) and could be by a female author.

A man is traveling around Europe and finds what appears to be an abandoned house. (I can’t remember if he inherited the house or not or if he was traveling with someone else) Somehow he finds himself at the edge of a huge hole and I think something about the house took him there. Also he was reading diaries or other things in the house which gave ominous mentions of another world of sorts. I thought the book was called something like House at the Edge of the World but can’t find anything that matches what I remember.

I saw this awhile back as being a big inspirations for more contemporary sci fi authors but did not recognize the name.