Either out of laziness to research some actual Swiss history or laziness to do anything allohistorical with the country, an astounding amount of timelines has Switzerland existing pretty much in the same borders it has today. Unfortunately, it doesn't end there. A lot of people assume Switzerland had always been neutral, filthy rich, had the best banks in the world and always had unified, highly-trained volunteer/militia-style armies that could fend off any attack on the confederation.
It is true that Switzerland was really lucky from the 19th century onward, almost miraculously avoided being dragged into both world wars and is generally the go-to synonym for “prosperous, rich, well-armed but peaceful neutral country” these days. But it wasn't always like that. Switzerland had barely united by the Late Middle Ages and was under firm Habsburg rule until the 15th-16th century (the dynasty itself originates from Switzerland). In the uneasy post-Napoleonic era, Switzerland's economy was crumbling, the country almost went bankrupt and narrowly avoided an all-out civil war (though it still occured briefly). The Swiss success story only really took off in the second half of the 19th century and the country has been officially neutral only since the Vienna Congress of 1815.
With a sufficiently early (e.g. medieval) PoD, Switzerland could turn out to be a very different country than the one we know from our history. While there still might be a confederation of cantons and armies dominated by infantry, nothing else is truly set in stone. Especially the Swiss borders. They CAN change.
“Nothing ever happens in South America, Africa, etc. But… Bizzarely, nothing ever happens in Switzerland either - since 99,9 % of all TLs just turn it into an unchanging and uninvadable Space Filling Statelet. It kind of just exists in its own separate pocket universe, even though every AH map of Europe will trick you into thinking it actually might have some ties to historical processes, whether positive, negative or neutral. And don't you ever dare to redraw its sacred unchanging borders - that's a major no-no !!!”
“That explains the neutrinos.”
One of catboy637's famous one-liners gleefully mocks this cliché :
“Sir, they're the SWISS ! We can't invade, magic spell !”
“Switzerland. Despite its reputation for staying exactly the same, Switzerland in fact added several additional cantons in OTL at the Congress of Vienna in 1815. Maps with PODs before the Napoleonic Wars should bear this in mind.”
Space filling empire (Switzerland is admittedly more of a “Space Filling Statelet”, as mentioned above.)