"The city in its setting and entire surroundings may be said to have something ideal." (Johann Wolfgang von Goethe, 1797). Scarcely any other European city has had its praises so often sung as Heidelberg. The mysterious Heidelberg Castle, the picturesque Old Town, and as Goethe himself stated, the perfection of its setting – in the nineteenth century, all of this attracted the German romanticists, who immortalized Heidelberg in poetry, music, and art. Today the charm of Old Heidelberg is combined with a future-oriented and international focus.

The 2000-year-old imperial city of Aachen, a cosmopolitan hub brimming with historical charm, lies at the nexus of Germany, the Netherlands, and Belgium — a trio inviting exploration. Not only famed as Charlemagne's imperial capital and his final resting place, Aachen is also renowned for its Aachener Printen, a unique type of gingerbread originating from this city.

Casablanca, Morocco's largest city, stands as a compelling contrast of gleaming architectural marvels and aging structures on the brink of decay. As Morocco's largest city and most active port, it exudes an undeniable cosmopolitan vibe. Located along the Atlantic coastline, the city pairs its fast-paced lifestyle with sophisticated restaurants and a myriad of shopping options. Gradually, Casablanca is evolving into a destination that holds its own against its Western counterparts.

With a globally recognizable skyline and 8.4 million people who call it home, New York City is bursting with diversity and excitement – from the iconic attractions you've seen on TV and in the movies to hidden gems waiting to be uncovered. Each of the five boroughs – The Bronx, Brooklyn, Manhattan, Queens and Staten Island – has a distinctive flavor, while individual neighborhoods maintain identities all their own.

Kerala’s first city, with its knotty official name of Thiruvananthapuram (often substituted by the shorter, more manageable Trivandrum), is a rich introduction to southern India's urban and cultural life. Trivandrum tends to be unjustly overlooked en route to the state's beachside settlements but easily warrants a few days of its own.