Serbia’s fascinating capital holds surprises around every corner—explore it all on intimate tours and excursions arranged by your cruise. On your agenda:

• Marvel up at the soaring dome of St. Sava, an orthodox temple in the heart of the old town—head inside for your private guided tour.

• Visit the Royal Palace, a grand stucco villa built in the 1920s, and wander through the beautifully appointed rooms that reflect Baroque and Renaissance styles.

• Taste a range of tart plum brandies—along with other delicious local delicacies—at local Quburish Distillery.

A day spent mostly on the river gives you an unparalleled view of some of the Danube’s most splendid natural scenery. Today, you'll:

• Wander past the crenelated towers of striking Golubac Fortress, a medieval fortified town with a tumultuous past built in the 14th century.

• Sail through the iconic Iron Gate, a series of soaring and stupendous narrow gorges that mark the boundary between Serbia and Romania—the gates are one of the greatest natural wonders in Europe.

• Wind your way through the stunning scenery that cuts a path through the Carpathian and Balkan mountains, marveling at the figure of King Decebalus carved right into the mountainside.

Today, explore Vidin, one of Bulgaria’s oldest cities, and beyond on a day that intimately connects you to the country’s past—and its local customs:

• Climb to the top of imposing Baba Vida Fortress, the largest medieval castle in the country, built on the ruins of an ancient Roman fortress.

• Hike around the spectacular and bizarrely shaped sandstone rock formations in Belogradchik—the fairytale-esque shapes are associated with legends passed down through the centuries.

• Visit a local home and learn how to make traditional Bulgarian yogurt and Banitsa, a savory, flaky pastry with cheese.