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.” Or journey to nearby Novi Sad, often called the “Athens of Serbia,” where you will stroll through Stari Grad, Liberty Square, and the Petrovaradin Fortress. For those wishing a more active adventure, join a guided bike tour through Belgrade. (B,L,D)