Guida
Obama Onsen is a beautiful hot spring town located on the western side of the Shimabara Peninsula in Unzen, Nagasaki Prefecture. Situated along the scenic Kichisima Bay, it is renowned for its incredibly high source temperature of 105°C and abundant water supply. This intense thermal energy has historically been used for salt production and, more recently, for advanced binary power generation. The landscape is a unique blend of sea and hot springs, featuring traditional inns, open-air baths along the coast, and the famous 105-meter-long footbath facility.
The history of Obama Onsen is deeply rooted in the region, with records dating back to the 8th-century 'Hizen no Kuni Fudoki'. It has been a popular destination for healing and relaxation for centuries. In 1949, the Emperor of Japan even visited the area to observe the salt production processes powered by the hot spring heat. An interesting modern anecdote involves the 2008 US Presidential election, where local supporters celebrated the phonetic similarity between the name 'Obama' and the town's name, bringing international attention to this quiet corner of Nagasaki.
A must-visit spot is 'Hotto Futto 105' within the Obama Marine Park. This extraordinary footbath stretches 105 meters, allowing you to relax while gazing out at the ocean. Another spectacular phenomenon is the 'Intermittent Hot Spring Eruption' (Kanketsu Funto) near the coast, where hot water bursts from the ground periodically. This provides a direct, visceral connection to the earth's energy. Additionally, many public bathhouses offer open-air baths where you can soak while enjoying the panoramic views of Kichisima Bay.
While the hot springs can be enjoyed year-round, the scenery is particularly beautiful during seasons when the coastal views are clear. We highly recommend visiting during the evening to witness the stunning sunset over Kichisima Bay while soaking in an open-air bath. Since the intermittent hot spring eruptions occur at specific intervals, it is wise to check local schedules beforehand to ensure you don't miss this dynamic natural display.
Beyond the hot springs, the local culinary scene is a highlight. The famous 'Obama Champon'—a noodle dish characterized by its savory seafood (including whole small shrimp) and light broth—is served at approximately 20 shops throughout the town. Walking through the streets to enjoy these local flavors is a delightful experience. You can also observe the modern integration of geothermal energy through the local binary power plant, showcasing how tradition meets innovation.
Located at the western foot of Unzen National Park, the area is surrounded by lush natural landscapes like Mount Unzen. You can easily plan a trip that combines exploring the natural beauty of Unzen with a relaxing stay in the hot spring town. The area is also accessible via routes connecting to Nagasaki City and Isahaya, making it a perfect base for a broader Nagasaki sightseeing tour.
Comfortable walking shoes are recommended for exploring the town. Please bring your own towel and a change of clothes when using bath facilities. Regarding payment, while many larger inns accept credit cards, many small local eateries and public bathhouses are cash-only, so please carry Japanese Yen. English language support may be limited, so using a translation app is helpful. Please remember to be mindful of others in public baths and observe standard hot spring etiquette, such as no photography in bathing areas.