The island of Tsushima, in Nagasaki Prefecture, lies between Japan and South Korea, just 50 kilometers from the South Korean port city of Busan. Thanks to its location, the island developed as a thriving hub for trade and cultural exchanges between Japan, the Korean Peninsula and mainland China. Tsushima has also played a strategic role on the frontline between the regional powers. From the Battle of Baekgang (663) and the Mongolian expeditions of Japan (1274 and 1281) to Japan's invasions of Korea under Toyotomi Hideyoshi (1592-1598) and the Russo-Japanese War (1904-5), it has had a long and turbulent history but has overcome all challenges. On this episode of Journeys in Japan, Brandon Chin explores Tsushima, meets the residents, and discovers the important role the island has played in Japan's history and international relations.

Moji, just over 800 kilometers west of Tokyo, is on the northernmost tip of Kyushu. Facing the Kanmon Strait -- an easy access route for Japan's main island and mainland Asia -- Moji prospered as a major sea transportation post from the Meiji to early Showa periods. Businesses catering to the port visitors, including foreigners, cropped up. And much of the Western-style architecture of the time has been preserved. On Journeys in Japan, Winnie Tsu strolls around the old port town, tracing its legacy.

Winter in Hokkaido Prefecture... It's a fascinating time to visit for the stunning snowscapes and natural phenomena caused by the severe cold. Kussharo, located in a huge caldera, is part of the Akan-Mashu National Park. Cradled by the outer rim of the crater, heavy, cold air accumulates and the temperature plummets below minus 20 degrees Celsius on windless days. Lake Kussharo is the largest lake in Japan that completely freezes over. Hot springs gush out from many spots, releasing steam. Snow, ice and the steam interact in the ultra-low temperatures to create mysterious and stunning natural works of art.