The palace of Versailles. Over 67,000 square meters. What is weird about this? It was built without toilets. Not one, single, toilet.

A long 144 years after construction, The Palace of Versailles got toilets installed. 144 entire years of zero sophisticated places to poop.
https://www.lohmeyerplumbing.com/french-palace-toilets-18th-century/

"Servants and aristocratic visitors often relieved themselves on back stairs, along the darkened corridors, or in any out-of-the-way place. The writer Horace Walpole agreed with other English visitors to Versailles that the approach was magnificent but the squalor inside was unspeakable." - James M. Anderson in Daily Life During The French Revolution.

Imagine everyone in your town gets kicked out and years later, a new inferior foreign population replaces you. They get there and claim the abandoned properties, but they have no idea how tvs work. They think they are decorational or a blank canvas to paint over. That is exactly the situation with The Palace of Versailles.