It's pretty much a 1:1 of the house I grew up in and a underground cave with a artificial sun with a simulation of the yard around it. because why the fuck not? If I have to live underground I'll live like I have from day to day and in the "basement" is a multi-petabyte server with backups (in case) of every thing I could need.

I just hope one day my daughters can see the real sun and swim in the river I loved so much as a kid