10/ You might think that as such an old country as Switzerland ๐จ๐ญ has no border disputes, that everything has long since been settled.
But actually it does.
Switzerland, Austria ๐ฆ๐น, and Germany ๐ฉ๐ช have no formal agreement on the exact course of the border in Lake Constance
https://en.wikipedia.org/wiki/Lake_Constance#International_borders
11/ The ๐จ๐ญ Switzerland ๐ฉ๐ช Germany border was also the topic last year, when it was decided to change to using the middle of the Rhein rather than the deepest point in the river (which moved over time).
The result was Germany gained 8 meters on the historic Bad Sรคckingen wooden bridge
https://www.swr.de/swraktuell/baden-wuerttemberg/suedbaden/grenze-bad-saeckingen-neu-vermessen-100.html
#geoweirdness