Classical music, palaces, exhilarating art... and did we mention the coffee? Vienna, Austria is a city of elevated tastes and a must-see experience for any European traveler.

Bar, a coastal town in Montenegro, is known for its scenic beaches and centuries-old landmarks. One of the town’s most significant historical sites is Stari Bar, an ancient fortress settlement set against the dramatic backdrop of Mount Rumija.

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.

The capital of Crete, Heraklion is a Greek port city and a popular stop on Mediterranean and Greek cruises. The city is an historical marvel, replete with archaeological wonders and remnants of the region's past. Highlights include the Heraklion Archaeological Museum, the Rocca a Mare Fortress, the Venetian Loggia, and just past the city limits, the Palace of Knossos.

Known for its glitzy image, Monaco is home to some of the world’s most famous attractions, including the iconic Monte Carlo Casino, the historic Prince's Palace, and the prestigious Formula 1 Grand Prix.