Switzerland, officially the Swiss Confederation, is a federal republic in Europe. While still named the Swiss Confederation for historical reasons, modern Switzerland is a federal directorial republic consisting of 26 cantons, with Bern as the seat of the federal authorities, called '"federal city". Situated in Western-Central Europe, Switzerland is also a landlocked country geographically divided between the Alps, the Swiss Plateau and the Jura. Spanning the intersection of Germanic and Romance Europe, Switzerland comprises four main linguistic and cultural regions: German, French, Italian and Romansh. Although the majority of the population are German speaking, Swiss national identity is rooted in a common historical background, shared values such as federalism and direct democracy, and Alpine symbolism. One of the most developed countries in the world, Switzerland ranks at or near the top globally in several metrics of national performance, including government transparency, civil liberties, quality of life, economic competitiveness, and human development. Its cities contain medieval quarters, with landmarks like capital Bern’s Zytglogge clock tower and Lucerne’s wooden chapel bridge. The country is also known for its ski resorts and hiking trails.

Naha is the capital of Okinawa Prefecture, the tropical island group south of mainland Japan. The modern city was officially founded on May 20, 1921. Before that Naha had been for centuries one of the most important and populous sites in Okinawa. In the medieval and early modern periods, it was the commercial center of the Ryūkyū Kingdom.

Tianjin is a metropolis in North China and one of the five national central cities. It is governed as a direct-controlled municipality, one of four such designations, and is thus under direct administration of the central government. The city borders Hebei Province and Beijing Municipality, bounded to the east by the Bohai Gulf portion of the Yellow Sea. As a dual-core city, Tianjin is divided into the old city and the Binhai New Area. As a treaty port since 1860, Tianjin has been a major seaport and gateway to the nation's capital.

Incheon officially the Incheon Metropolitan City, is South Korea's third or fourth largest metropolis, after Seoul and Busan, and tied with Daegu. As the largest seaport on the west coast and home to the country's largest airport, Incheon International Airport, Incheon is South Korea's most important transport hub. In the 21st century, Incheon has transformed into a global business hub centered around the high-tech and futuristic Songdo International City, which is home to South Korea's tallest building, the 305m supertall Northeast Asia Trade Tower.

Busan is South Korea's second largest metropolis after Seoul, with a population of around 3.6 million. It is the largest port city in South Korea and the fifth largest port in the world. The city is located on the southeasternmost tip of the Korean peninsula and faces the Korea Strait. The most densely built up areas of the city are situated in a number of narrow valleys between the Nakdong River and Suyeong River, with mountains separating some of the districts. Nampodong to the south is Busan's shopping and entertainment downtown, while central Seomyeon at the intersection of subway lines 1 and 2 is the main office building area. Between them are Busan's train station and its international ferry terminals. The beaches of Gwangalli, Haeundae and Songjeong lie to the east, the ruins of mountain fortress Geumjeong guard the north. To the west is Gimhae town where the Busan Airport is located.

Hiroshima is the capital of Hiroshima Prefecture, and the largest city in the Chūgoku region of western Honshū, the largest island of Japan. It became best known as the first city in history to be destroyed by a nuclear weapon when the United States Army Air Forces (USAAF) dropped an atomic bomb on it at 8:15 A.M. on August 6, 1945, near the end of World War ll. Although many only know it for the horrific split when it became the site of the world's first atomic bomb attack, it is now a modern cosmopolitan city with excellent cuisine and a bustling nightlife.

Shanghai is the cool, confident face of modern China, and its energy is infectious. Located in the Yangtze River Delta in East China, Shanghai sits on the south edge of the mouth of the Yangtze in the middle portion of the Chinese coast. Shanghai is a popular tourist destination renowned for its historical landmarks such as The Bund, City God Temple and Yu Garden as well as the extensive Lujiazui skyline, many skyscrapers, and major museums including the Shanghai Museum and the China Art Museum. It has been described as the "showpiece" of the booming economy of mainland China. Go to its heart, The Bund, to watch ships on the river and marvel at the huge variety of architectural styles on display, or watch the crowds go by in People's Square!