Trying to remember the name of a story

So I listened to a narration from MrCreepypasta of a story a year or 2 ago. It wasn't necessarily recent, but I can't remember what it was called, I just remember a tiny bit of it and it was 2 parts. I know at the beginning the (1st person) protagonist is checking out either an old town or like his dad's business buildings or something, but he basically goes down a seemingly endless staircase. The main part I remember is him talking about the walls and looking into a room with a ton of pillars throughout. If anyone can even give me a clue I would appreciate it! Also watch history/likes/etc. is no help. I have a creepy pasta playlist with over 2000 videos and I listen every night. TYIA