The capital of Serbia, Belgrade has emerged in recent years as a prime city break destination. Home to a fascinating collection of architectural styles, from ancient Ottoman structures to Art Nouveau masterpieces and Soviet-era concrete towers, Belgrade positively buzzes with history and culture. Don’t miss the Kalemegdan Citadel, an impressive fortress set within a lovely park; the Royal Palace, which includes secret underground rooms to explore; Saint Sava Temple, one of the largest Orthodox churches in the world; and the sobering Museum of Yugoslav History, which includes the Mausoleum of Marshal Tito. The Nikola Tesla Museum will delight science enthusiasts, while – come evening – Belgrade’s wonderful pedestrian streets (such Knez Mihailova and Skadarlija) bustle with activity, offering a great selection of bars, restaurants and entertainment venues.