A:
The best Eco Tours in Serbia according to Viator travelers are:
- Northern Serbia: Sremski Karlovci and Novi Sad Full-Day Tour from Belgrade
- Blue Danube: Iron Gate National Park Tour with 1-hour speedboat ride
- Šargan Eight Railway, Wooden Town & House on Drina river day trip from Belgrade
- Belgrade E-Bike Tour: Power Glide!
- Day Trip from Belgrade: Gems of Eastern Serbia