Straddling the Adriatic Sea where it plunges deepest into Europe, Rijeka boasts a rich maritime history. Croatia's third largest city and the heart of Primorsko-Goranska County, its charm lies in its hospitable spirit and diverse cultural heritage. As you amble along the Habsburg-era Korzo promenade, peek into the 19th-century National Theatre, graced with Klimt's artwork. Soak up the sweeping views of Kvarner Bay's islands from Trsat Castle. A cosmopolitan harbour of coexistence, welcome to Rijeka.

Nestled within the lush Al-Ahsa Oasis in the Eastern Province of Saudi Arabia, the city of Al Hofuf (also known as Al-Ahsa or Al-Hasa) sprawls over the palm-tree covered lands inhabited since prehistoric times. Al Hofuf is packed with historic sites, architectural monuments, and natural wonders, from forts and palaces to the whimsical Qara Mountain Caves and natural springs.

Moscow is a city of contrasts where the bohemian and the glamorous merge in an idiosyncratic fusion – do not be surprised to find a golden-domed 16th-century church next to an ultra-modern glass skyscraper or a Soviet blockhouse. Here, salty fish eggs (caviar) are washed down with bubbly champagne, and worn-out commuters travel by the elaborately decorated, elegant metro, one of the city's main attractions.

A gateway between the two nations of the Iberian peninsula, Badajoz lies as close to Lisbon as it does to Madrid or Seville, and the city draws on influences from both sides of the border, as well as from centuries of tumultuous history, to form its distinctive character. Winding medieval alleys and a skyline dotted with palace towers make the historic town a sight to behold, while the remnants of the majestic Alcazaba watch over the city as they have for centuries, once an impenetrable fortress that protected the area from countless invasions.

Manila, the capital of the Philippines, is one of Asia's best-kept secrets. As the capital of the only predominantly Catholic country in the Orient, it presents a unique blend that feels slightly out of place, yet vibrantly infused with Latin American and Caribbean influences. Music and dancing are ubiquitous, and the city's warmth and enthusiasm can easily rival that of Bangkok. Manila's rich history, shaped by centuries under Spanish religious influence and decades of American consumerism, has led to the saying that the city spent "400 years in a convent and 50 in Hollywood".