Two hours
Zemun: Veliki trg, Glavna, the quay. Skip the tower — the climb takes longer than it looks.
05 — See & do
Zemun is quiet, on the water, with houses that look like they arrived from another country — because they did. Belgrade is loud and large. An hour gives you Zemun; half a day gives you both.
For 26 November: the day is short and it is dark by about 16:00. Everything in Zemun can be walked before the programme or after it.
Zemun
A loop of about two kilometres, an unhurried hour. It starts and ends on Glavna — which is where you already are.
Belgrade
The classic route from Trg republike to Beton hala, about three kilometres. Enough for an afternoon, too much for an hour.
How much time you have
Zemun: Veliki trg, Glavna, the quay. Skip the tower — the climb takes longer than it looks.
Zemun in the morning (Gardoš and the quay), then a taxi to Kalemegdan and a walk to Beton hala.
Morning in Zemun, the whole of central Belgrade on foot, dinner at Beton hala or Galerija.
Shopping
Ušće is closest to Zemun (12 minutes by car, free parking). Galerija Beograd is bigger, along the Sava, with a cinema and restaurants. For souvenirs and gifts, stay in Zemun — Glavna has small shops that do not feel like an airport.
After dark
Zemun at night is not Belgrade at night — that is the point. Rakia Bar on Magistratski trg for a brandy tasting, the quay for a walk, the Sava barges if you want music until morning (20 minutes by taxi).