/diy/ - Do It Yourself

Alright /diy/, new homeowner here. Guy who sold me this place took a bunch of his fancy chandeliers with him and I'm trying to replace them with normal ceiling fixtures. I get up there to attach the mounting bracket for a ceiling fan and see this shit.

It's like every room was designed to have a giant chandelier hanging in it - all there is is the electrical wires and a threaded pipe that I'm assuming can hold a tremendous amount of weight.

Any idea what this mounting style is called or if there are ways to adapt them to normal fixtures? The place came with a bunch of nice covers for all the unused hookups so I'm assuming it's not totally uncommon, but Google is failing me.