What have you encountered while travelling that was your biggest cultural shock?
I'll go first: in Poland I saw families/extended families living 10+ in a 2 bedroom home. The concept of having a bedroom or even a bed to oneself is seemingly unheard of. Everyone sleeps in different beds each night, and beds are often shared. Having visitors in this set up is no problem either: everyone just rearranges. Water also came from Wells, lots of homes had no bathrooms. Ovens were these metal beasts that were plugged into the mains.