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.

Cluj-Napoca, often referred to as the unofficial capital of Transylvania, is a vibrant and lively city with a rich cultural history. Despite its ominous administrative status, the city is far from grim and has a well-deserved reputation as a party town. Named the European Youth Capital in 2015, Cluj-Napoca is home to an estimated 100,000 students, who make up about a fifth of the population. This youthful energy, combined with the city's cultural renaissance, makes Cluj-Napoca a must-visit destination for anyone interested in experiencing the vibrant arts and entertainment scene.

Located in the Canterbury region, Christchurch — the largest city on the South Island — is a compact city, easy enough to explore on foot or bicycle, with stunning nature never more than a stone's throw away. In the wake of the 2010-2011 earthquakes, Christchurch has re-emerged brighter and livelier than ever. It's a city where creativity and innovation run wild, and the hospitality and arts scenes are buzzing with energy. Truly, it's a unique destination that's positively thriving.

Phoenix, the vibrant capital of Arizona, basks in a sun-drenched paradise known for its warm climate year-round, with summer temperatures often exceeding 100°F (~38°C)—the dry heat makes it more bearable though. The city is also the most populous state capital in the U.S., which translates to a richly diverse collection of cultures and activities. And perhaps most spectacularly, every drive or stroll through the city is accompanied by a backdrop of the Sonoran Desert, sandy mountain ranges, and eternal blue skies.