To celebrate the release of Batman v Superman: Dawn of Justice on Digital HD, Warner Bros. has released a cool behind-the-scenes video that shows how the new Batcave was built.

Production designer Patrick Tatopoulos gives a tour of the Batcave he thought up. His goal was to make it look like everything was floating. The only thing that touches the ground is Bruce Wayne’s chair.

All of the screens on the Batcomputer were real — no green screen here. This helped Ben Affleck interact with something that was actually there, instead of having to imagine it in his head.

Batman v Superman: Dawn of Justice Ultimate Edition is available now on Digital HD services. It will come to Blu-ray on July 19th.