Takegashima Hot Spring — Seaside Onsen with Pacific Views

**Ocean bathing:** The rotenburo sits on a terrace 20 meters above the ocean, with nothing between bather and horizon but sky and water. The bath is gender-separated, outdoors, with excellent sunset views (17:00–18:00 in summer). The salt content (natural from spring water) leaves skin feeling smooth. Water temperature: 41–42°C. **Glass-bottom boat:** Nearby Takegashima Harbor offers glass-bottom boat tours (グラスボート) through sea caves and along coastal cliffs, viewing tropical fish and coral through the boat's transparent floor. The tour passes under a natural arch (鳥居岩, torii-iwa) and into narrow sea caves with blue-glowing water. Tours run April–October, weather permitting. **Remote coast atmosphere:** Takegashima is far from major tourist routes, giving it a sleepy seaside village vibe. The area sees mainly Japanese domestic tourists and local bathers. Few international visitors make it here — which is the appeal. Combine with Temple #23 Yakuoji (30 min north, see separate entry) for a coastal day trip. **Dining:** Local restaurants (near onsen) serve fresh-caught fish and lobster (伊勢海老, ise-ebi) — this coast is known for spiny lobster fishing. Expect simple teishoku (set meals, ¥1,500–2,500) with sashimi, grilled fish, and miso soup. No English menus, but staff are friendly.