4/ Germany 🇩🇪 has one exclave, the city of Büsingen am Hochrhein is entirely surrounded by Switzerland🇨🇭
For time zone nerds: tiny Büsingen (pop. ~1,500) has it's own entry in the IANA timezone database:
https://en.wikipedia.org/wiki/Time_in_Germany
5/ Germany 🇩🇪 contains one "pene-exclave" (practical exclave). Due to mountains the Austrian 🇦🇹 village of Jungholz can only practically be reached via German roads. The village has both German and Austrian postal codes.
https://en.wikipedia.org/wiki/Jungholz
#geoweirdness