Two days is enough for Belgrade’s river side if you keep the city-history stops to one anchor hour and give the rest to Zemun and the splavovi. Everything prices in RSD, roughly 117 to the euro in 2026, and public transport has been free since January 2025, so the only real cost is what you spend once you’re there. Want more time on the water? Step up to the 3-day , 4-day , or 7-day version of this same route.

Two days is enough to hit Belgrade’s history core hard: the fortress over the Sava-Danube confluence on day one, then the giant Saint Sava dome and the Nikola Tesla Museum’s coil demo on day two. Base yourself in Stari Grad or Dorcol, ride the free public transport, and pay in dinars. Longer on this same spine: the 3 day itinerary and 4 day itinerary add Yugoslav history and Zemun. Book these before you go:

Three days on Belgrade’s rivers means one fast photo at Kalemegdan and then the water runs the whole show: a Savamala day among the warehouse bars, a full Zemun day that ends on a splav, and a beach afternoon at Ada Ciganlija before Kula Belgrade’s skyline closes it out. Everything prices in dinars, roughly 117 RSD to the euro in 2026, and every bus, tram, and trolleybus has been free since January 2025.

Three days takes the same fortress-and-Saint-Sava core from the 2 day itinerary and adds the full Yugoslav history loop: Tito’s mausoleum and an afternoon in Novi Beograd’s brutalist district. Base in Stari Grad or Dorcol, ride the free trams and buses, pay in dinars. Need more time still? The 4 day itinerary folds in Zemun and a river cruise. Book these before you go: Stari Grad or Dorcol hotel on Booking.

Four days on Belgrade’s rivers means a full day for each act instead of cramming two into one: Savamala and the confluence first, Zemun with a river cruise and a splav night second, a full day at Ada Ciganlija third, and Belgrade Waterfront’s Kula deck with a second splav to close it out. Kalemegdan gets one focused hour, not a whole afternoon, the fortress and Yugoslav history sites belong to a different trip.

Four days keeps the fortress, Saint Sava, Tesla Museum and Yugoslav history core from the 3 day itinerary and adds a fourth day across the water: Zemun’s Austro-Hungarian quay and a Sava-Danube cruise, the one river-and-nightlife day this history-focused route makes room for. Base in Stari Grad or Dorcol, pay in dinars, ride the free trams. The 5 day itinerary adds Ada Ciganlija and a second museum day next. Book these before you go:

Five days keeps the full 4 day itinerary spine, fortress, Saint Sava, Tesla Museum, Yugoslav history, Zemun, and adds a fifth day for Ada Ciganlija’s river-beach and a second museum run using a Belgrade Card. Base in Stari Grad or Dorcol, pay in dinars, ride the free trams. The 6 day itinerary adds a Smederevo Fortress day trip next. Book these before you go: Stari Grad or Dorcol hotel on Booking.

Six days on Belgrade’s rivers means every act gets a full day of its own, plus a proper finish outside the city: Savamala and the confluence first, Zemun with a river cruise and a splav night second, a full day at Ada Ciganlija third, Belgrade Waterfront’s Kula deck with a second splav fourth, Skadarlija’s kafanas paired with a Danube island fifth, and a Smederevo Fortress day trip along the river to close it out.

Six days keeps the full 5 day itinerary spine and adds a day trip out to Smederevo Fortress along the Danube, a genuine change of pace from central Belgrade without leaving the history theme behind. Base in Stari Grad or Dorcol, pay in dinars, ride the free trams and buses everywhere in the city itself. The 7 day itinerary adds a full Kalemegdan-and-Waterfront finale day. Book these before you go:

Seven days is the full history-core route: the 6 day itinerary spine plus a last day going deeper into Kalemegdan’s underground tunnels and up the region’s tallest building at Belgrade Waterfront. Base in Stari Grad or Dorcol, pay in dinars, ride the free public transport everywhere. This is the version to run if you want the fortress, Saint Sava, the Tesla coil demo, Tito’s mausoleum, Novi Beograd’s Brutalism, Zemun and Smederevo all in one trip.

Forget euros. Belgrade runs on the Serbian dinar (RSD), roughly 117 to the euro and 103-106 to the dollar in 2026 (check both same-day on the National Bank of Serbia’s own rate page , the euro side barely moves, the dollar side does). This trip’s real hook is the water: the splavovi floating clubs lined up along the Sava and Danube, Zemun’s calmer Austro-Hungarian quay across the river, and Ada Ciganlija’s inland beach once summer hits.

Belgrade runs on the Serbian dinar (RSD), not the euro. Serbia is an EU candidate, not a member, and euro adoption is not close. Prices are genuinely low: a full sit-down dinner rarely clears 2,000 RSD a person. Since 1 January 2025 every city bus, tram, trolleybus and BG Voz train has been free, no ticket needed, which changes how you plan a day here more than any other single fact.

A full week on Belgrade’s rivers gives every act on the spine its own day, then tacks on a flex morning and one last splav crawl before you fly out: Savamala and the confluence first, Zemun with a river cruise and a splav night second, a full day at Ada Ciganlija third, Belgrade Waterfront’s Kula deck with a second splav fourth, Great War Island paired with Skadarlija’s kafanas fifth, a Smederevo Fortress day trip sixth, and a loose seventh day that closes on the water.