THE DIONAEA HOUSE. (<- Link) Easily one of the greatest, most engaging creepypasta works ever made. The author went to write the magnificent film "Arrival." When I was young and the site was still up, The dionaea house was one of the things to scare and terrify me the most.
A lot of horror works have gone on to be made included This Video (<- Link) by Jacob Geller about haunted houses that mentioned "The House of Leaves" that reminds me a lot of the Dionaea House (though only in hindsight.) As well as the game Control. The haunting of hill house too (Being older than the creepypasta I can't say if it was inspired but this comes the closest to the Dionaea House that I can think of.)
Anyway please read the Dionaea House. I can never stop thinking about it.