Bunker Fourth Floor - Laboratory Level

Ok this floor was purely for my own enjoyment. In my head canon the boys don't find this floor for a long time and then one day explore more of the bunker and come across this floor! I imaging Dean basically living in the hot tub and Sam, Cas and Jack using the laboratory for crazy experiments and maybe some small-ish explosions much to Dean's exasperation. We all know Sam + Cas is a recipe for disaster (with all the love to them both)

1. sauna rooms

2. swimming pool and hot tub

3. science lab

4. second kitchen