I loaded up a mew world in the beta bedrock version and located the nearest Piglin bastion. When I got there, I saw this giant cube floating over a lava lake that's supposed to be the remnant. It's the one attached. Inside looked cool but all of the treasure rooms were easily exposed and it didn't look like the ones I have seen from the other people. I don't think they are supposed to generate like this. They weren't as menacing as I think these structures are supposed to be.