It is important that a release for commercial use is given.
Galleries can opt to be geo-referenced in the VR and have a digital twin located at virtualgalleries.com. Alternatively, galleries can be anonymized to be used as a stock backdrop provided to artists to display their work in VR.
Artist studio spaces can also be captured.

Try Ultra Super New Gallery or tokyopixel.jp

Craig Rozynski virtualgalleries can also create a custom 3D gallery space, which might be interesting for your ghoul pieces and voxel art.

Thank you! virtualgalleries.com looks great. I have got one set up on https://oncyber.io/ghoul, but it's quite different to what you're offering.

Craig Rozynski Thank you for checking out virtualgalleries.com. I do need to work on the landing page.
Oncyber.io is a great platform and not so different from what I am building with virtualgalleries.com.
There are some important differences though.
Oncyber.io uses .GLB 3D model files, which can be saved from most 3d programs such as Blender or Cinema4D.
With those same 3D programs you can render the view as a 360 deg panoramic image with much more visual fidelity than is possible with 3D real-time graphics.
I do understand the market for something that feels like a video game and for a lot of digital art, realism and visual fidelity are not so important. For people that make real things and show them in real places, the visual aspect is really important when transitioning to a virtual context.
Virtualgalleries can capture real spaces photographically and model purely virtual spaces in 3D.
Navigation with virtual tours is by gaze with a headset, tap with tablet or phone and a mouse click on PC.
Personally, I believe the way virtual tours work with a spherical 360 image or video and simpler navigation is a better experience than what is offered in emulating video games. Running around with WSAD keys and pressing spacebar to jump is not generally conducive to selling/purchasing an NFT.
If spatial activity is important, virtualgalleries can capture your 'real' space as 3D WebGL using photogrammetry.
If it is preferred to host your gallery with OnCyber.io virtualgalleries can also supply your space as a .GLB file to upload.