Hi! if you have to choose only one full-day trip, which one would you go for?

Hi Daniele,
If I had one day, I would go with Durmitor National Park, Tara Canyon, And Ostrog Monastery. It is a long drive but the north is breathtaking. Tara Canyon is the deepest canyon in Europe while Durmitor is home to some of the most iconic mountains in the country. If you love nature, you are going to love the tour.

I hope this helps!