Through long years of research, I've finally discovered that the provisional house exists in China, in our world.

http://www.91feipin.com/product/product41_en.html

Behold, the provisional house in all of its majestic glory!

and what is the purpose of this thread? During the Middle ages and Renasance there were also 'houses' in Europe, named after Nobles from the family

Isn't it amazing how there's a place that fills no space at all, where people can gather and share their ideas? All the intricacies of human interaction, but digitized.