In Lithuanian we have these:

• Dievo užmirštame kampelyje - In the little corner God forgot about (typically meaning a beautiful place)
• Giliame užkampyje - Somewhere deep, behind the corner
• Pasaulio pakrašty - At the end of the the world

Italian: “in culo al mondo”/“in culo ai lupi” (in the butt of the world/in the butt of wolves)

In South Africa, we say “halfpad tussen Pofadder en Putsonderwater”

Which translates to halfway between Pufadder (named after the snake) and well-without-water town.

Both are real places, with the stereotypical names that already play on the fact that there is very little going on there.

The open stretch between the two with no roads, no farms, no railways.

These days, it does not work in reality as their built the Square Kilometer Array there, as it was probably the quietest place (radio signal wise) in the world where you could build radio telescopes.

In America we also have “fuck-ass nowhere,” “bumble fuck,” and “bum fuck.” And that’s before you get creative and start making shit up.

German also has a few other interesting ones that refer to actually real places.

• Buxtehude (small town near Hamburg)
• Timbuktu (ancient town in the Sahara)
• Pampa (grassland in agentinia)

The last one makes historical sence since many Germans migrated to that region of south America in the 1800, and then more Germans got replaced in the soviet union and moved there and then many Nazis fled there after the surrender. So its just a synonym for a place very far away. Not sure where the rest come from

Since there’s surprisingly no Russian here yet, here are a few I know (some are probably regional):

• Где раки зимуют [Gde raki zimuyut] - “where crayfish spend their winter”
• У чёрта на куличиках [U chyorta na kulichikah] - “on the devil’s little Easter breads” (there’s also a version “on the devil’s horns”)
• За тридевять земель [Za tridevyat zemel] - “beyond threenine (i.e. 27) lands” feels somewhat fairytale/archaic, haven’t heard anyone use it unironically
• В жопе мира [V zhope mira] - “in the ass of the world”
• Зажопье [Zazhopye] - a made up placename roughly meaning “beyond ass”, evocative of many toponyms which start with the same prefix (e.g. Замосковоречье [Zamoskvorechye] - “beyond river Moscow”)
• Мухосранск [Mukhosransk] - made-up town name, roughly translatable as “where flies shit”
• Ухрюпинск [Ukhryupinsk] - corrupted name of the town of Uryupinsk, probably on account of it being far away from my birthplace
• Подзатворожинск [Podzatvorozhinsk] - made-up town name, roughly “[place which] started to turn into cottage cheese” or “under the [place] beyond cottage cheese” or some combination of the two

But honestly the most likely phrase I’d use in an informal context is a boring чёрт знает где [chyort znayet gde] - “devil knows where”

In Québec we also use au milieu de nulle part. But abetter option is Saint-Glin-glin des meuh-meuh. Saint-ding-dong on the moo-moo.

“Buttfuck, Egypt” is my favorite version of this expression.

In New Zealand we say ‘in Waikikamukau’ (pronounced “Why kick a moo cow”) because it’s juuuuust enough like actual place names here that people don’t instantly pick up on the alternate meaning.

I guess closest turkish version I ever seen used is “ebenin götünde,” which translates to “in your midwife’s butt.”

We have a few in Spanish, one of my favourites is “Donde Cristo perdió el mechero”: Where Christ lost his lighter.

I find it funny that the title is “cultural differences”, but the content is actually showing how all these cultures needed someway to describe being in the middle of nowhere.

people from stockholm call everything that’s outside of the city spenaten, “the spinach”.

In my hometown we usually say “a Puttemburgo” (literally “Whoreburg”) or “in culo ai lupi” (“up the wolves’ arsehole”) or “a Tron di Dio” (“on God’s throne”).

Meanwhile in Chile: “A la conchade su madre” (Literally: “Towards your mother’s c**t”)