The Arctic Ocean, the world's smallest and shallowest ocean, offers a breathtaking and unique adventure for those seeking the grandeur of the polar regions. This icy expanse, bordered by Europe, Asia, and North America, is renowned for its stunning natural beauty and pristine landscapes.

Shimizu, a picturesque port in Shizuoka City, offers stunning views of Mount Fuji on clear days. Shimizu is known for its rich maritime history, and a culinary highlight is its fresh seafood, particularly tuna. The port boasts the highest tuna catch in Japan, making it a prime destination for sushi fans.

Asmara, the capital of Eritrea, is a city where time seems to have paused in the mid-20th century. Known for its remarkably preserved Italian modernist architecture, the city has earned recognition as a UNESCO World Heritage Site.

The commercial and cultural center for the Ruhr region on the Rhine River, Duseldorff is also the site of the Felderhof Cave where Neanderthal man was found in 1856.

Portland, Oregon, is a city where natural beauty and urban innovation coexist harmoniously. Nestled between the Columbia and Willamette Rivers and framed by volcanic mountains, Portland offers an array of outdoor adventures alongside its renowned cultural scene. Visitors can explore the lush expanses of Forest Park, one of the largest urban forests in the U.S., or take a leisurely stroll through the Portland Japanese Garden, which showcases exquisite traditional Japanese landscape design.