Tom Brady Cameras Roll Inside Mansion ... For New Docu-Series

Ever wonder what Tom Brady's Massachusetts mansion looks like on the inside?? Of course you do.

The usually super-private superstar opened the doors to his $4.5 million pad for his new documentary "Tom vs. Time" dropping soon on Facebook Watch ... revealing TB12's life OFF the gridiron.

The teaser is filled with Brady-isms like referring to himself as a warrior and cute moments with his kids ... but what's really eye-opening is getting a glimpse of the Brady fam's incredible home.

Hopefully there's a lot more of Brady's house -- and Gisele.