The British magazine Evening Standard describes Belgrade as an ideal destination for a perfect weekend.

“To properly understand Belgrade go to Kalemegdan — a sprawling park and citadel at the top of the city’s main street. The view from its ramparts is truly one of the great views of the world…”

https://www.standard.co.uk/lifestyle/travel/what-to-do-see-and-eat-in-belgrade-serbia-a4380381.html