BELGRADE, SERBIA. Explore Serbia’s capital, Belgrade, on a city tour, which includes the Nikola Tesla Museum, encompassing the world-renowned inventor’s life and inventions, as well as the Kalemegdan Fortress and the Serbian Orthodox Cathedral of St. Sava, the largest such church in the world. Alternatively, you can hike to Belgrade Fortress. In the afternoon, enjoy a taste of the region by sampling a few types of Serbian brandy paired with delicious local appetizers, including Šlivovitz, which was added in 2022 to UNESCO’s list of “Intangible Cultural Heritage.” For those wishing a more active adventure, join a guided bike tour. Or explore Novi Sad, a city rich in tradition and culture, on “The Athens of Serbia” walking tour. Stroll through Stari Grad, the old town center; and explore Liberty Square, which is dominated by the Old Town Hall. (B,L,D)