Tromsø, a gem nestled in the Arctic Circle, offers an unparalleled blend of natural wonders and cultural richness. Known as the "Gateway to the Arctic," this Norwegian city is famed for its spectacular Northern Lights. Between September and April, Tromsø becomes a prime location for witnessing the aurora borealis, a mesmerizing display of green, purple, and pink lights dancing across the polar sky.

Travelers on the Arabian Sea often find themselves in Muscat, on the Gulf of Oman. This port capital is situated between ocean and mountains, and boasts lovely beaches, great diving sites (watch for turtles!), 16th-century forts, and the impressive Sultan Qaboos Grand Mosque, which can hold 20,000 people.

Beppu boasts the largest volume of hot water and number of hot spring sources in Japan. The city is divided into eight distinct hot spring areas.

Weimar, located in the heart of Germany’s Thuringia region, is a city renowned for its cultural heritage, classical architecture, and pivotal role in European history.

At the very heart of Denmark lies Odense, birthplace of Hans Christian Andersen and Denmark's third-largest city - the fairy-tale capital of Funen, home to 200,000 people and with a history stretching back over 1000 years.