(Sometimes seeing each of those layers is maybe not actually that fun, especially if there are many layers and especially if they are installed to last. I feel for people who started demolitions only to discover five layers of tile or three layers of drywall and a layer of lathe and plaster on the walls. We did not have any extreme problems.)
Last week, when the Husband took off all the electrical covers, we discovered this green underneath:
And, in the kitchen, underneath the tile, we found this fake, pebbly laminate:
Those combined: the perfect 70s house?
This house was renovated at some point, so I know the colour isn't the absolute original: notice the light switches? They read '120V' which means it's not the knob and tube the house was originally wired with. But how long ago this was done? I couldn't say.