See the local sea life through its underwater exhibit built underwater and through a glass bottomed boat ride.
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串本応挙芦雪館 Kushimoto Ōkyo Rosetsu kan
This art museum prides itself as being Japan's smallest. Houses a fine collection of "India-ink" paintings by Ōkyo Maruyama and his disciple Rosetsu Nagasawa.
橋杭岩
A legendary set of rock formations that stretch out sea for about 850 meters, and is pretty much ingrained into the town's identity to both locals and visitors.
潮岬灯台 Shiono Misaki Tōdai
Built in 1873 and at 19.55 meters, this Meiji-era lighthouse served as an important marker for ships entering Osaka Bay.
古座町 Koza-chō
This town was independent until 2005 and continues to maintain its own identity. The scenery along the waterway that bisects the town, the Koza River, is quite picturesque.
日米修交記念館 Nichibei Shūkō Kinenkan
A museum commemorating the first actual arrival of an American ship in Japan—the USS Lady Washington in 1791—taking place decades before Commander Perry's more famed 19th-century landing. Also houses a small collection of memorabilia of the town's American Sister City (Hemet, California). Exhibits have English-language recordings and materials.