Austria
Not sure where it is, if any Austrian can help?
Schiederweiher
Outside Vienna
Too many hills, I'm skeptical
well it's definitely not inside Vienna
It's the Schiederweiher.
In 2018 the Schiederweiher was voted most beautiful site in Austria, through the popular vote of the local TV series „9 Plätze – 9 Schätze” (9 sites – 9 treasures)
Kangaroos where?
/s (if it wasn't obvious)