From grand castles to resplendent cathedrals, Tallinn’s Old Town neighborhood, a UNESCO World Heritage Site, is the perfect place to begin exploring. Enter through Viru Väravad, or Viru Gate, the former fortress whose remaining two towers beckon you into the heart of the city.

Home to a number of Hindu and Buddhist temples, beautiful botanical gardens, and ancient palaces, Kathmandu is the perfect place to immerse yourself in Nepali culture, history, and religion.

Cagliari is Sardinia's capital and largest city. Several civilizations have left their imprint here architecturally and culturally. Must-sees include the Museo Archeologico Nazionale di Cagliari, with its Roman and Byzantine treasures, as well as Castello, a medieval quarter situated on a hill above the city. The city is also known for its food and vibrant nightlife.

Chennai, the capital of Tamil Nadu, is one of India’s oldest continuously inhabited cities, where ancient temples stand alongside colonial-era architecture and modern skyscrapers. Originally known as Madras, the city grew around Fort St. George, built by the British East India Company in 1644. One of Chennai’s most well-known features is Marina Beach, which stretches for over 13 kilometers and is among the longest urban beaches in the world.

Angola is one of Africa’s most surprising travel destinations, where modern cities meet ancient traditions and landscapes range from dramatic waterfalls to endless Atlantic beaches. In the capital of Luanda the waterfront promenade known as the Marginal buzzes with music, food stalls, and sunset views. A short drive away, the Fortress of São Miguel panoramic views of the bay.