Guida
Kushima Castle (Omura Park) is a historic castle site located in Omura City, Nagasaki Prefecture. Built on a peninsula jutting into Omura Bay, it served as the stronghold of the Omura Clan. Today, the area is maintained as 'Omura Park,' a beautiful space where you can enjoy historical stone walls, restored wooden watchtowers, and natural treasures such as the natural monument 'Omura-zakura' cherry blossoms and iris flowers. The site is uniquely characterized as a 'sea castle' (umijiro), harmoniously blending historical architecture with the surrounding marine landscape.
The construction of Kushima Castle dates back to 1598 (Keicho 3). The former lord, Omura Kiyosaki, chose this location due to its strategic advantage as a defensible site surrounded by the sea, a lesson learned from the experiences of the Imjin War. While the original walls used natural stones, a major renovation in 1614 by the second lord, Omura Sumiyori, introduced the 'uchikomi-hagi' technique, using processed stones to create the sophisticated and beautiful stone walls seen today. Although the castle was decommissioned following the Meiji Restoration in 1871, the site remains a vital historical landmark, with Omura Shrine established on the site of the former main keep (Honmaru).
The park preserves various historical remains. A major highlight is the 'Itajiki Yagura' (wooden watchtower), which was reconstructed in 1992. Visitors can also observe the exquisite stone walls and the strategic layout of the castle grounds. Other significant sites include the 'Ofunagura' (storehouse) ruins, which offer insight into the daily life and functions of the former domain. At the center of the former main keep, you will find Omura Shrine, which houses a monument to the founder Omura Kiyosaki and a statue of the final lord, Omura Sumihide.
Omura Park offers diverse botanical beauty throughout the seasons. In spring, the park is famous for the 'Omura-zakura' cherry blossoms, a variety designated as a natural monument and one of Japan's top 100 cherry blossom spots. In early summer, the blooming irises (Hanashobu) create a stunning landscape alongside the water. For the best experience, visit during daylight hours to fully appreciate the intricate details of the stone walls and the reconstructed watchtowers.
The park features well-maintained paths, making it easy to walk through and visually understand the structure of a traditional Japanese castle. You can learn about ancient defensive mechanisms by observing the terrain, such as the traces of moats that once utilized the sea. Exploring the reconstructed wooden watchtowers provides a direct connection to Japanese architectural history. Understanding these historical contexts transforms a simple stroll into a deep journey through Japan's political and military past.
The area surrounding the castle contains several historical sites that supported the domain's functions. For instance, the site of the former 'Kajiyama Goten' (the lord's villa) is now used as the Omura City Education Center. Near the sea, the 'Shin-kura' and 'Ofunagura' ruins—designated as historical sites of Nagasaki Prefecture—showcase the importance of maritime storage and management. Exploring these spots together provides a complete picture of the historical urban structure of the Omura domain.
While many paths in the park are relatively flat, we recommend wearing comfortable walking shoes to navigate the areas around the stone walls and historical ruins. Most nearby facilities and transportation services accept both cash and credit cards. While some English signage is available, it may be limited to major landmarks. Photography is permitted for enjoying the scenery, but please respect the historical sites and natural environment. Note that some areas may have uneven surfaces or small steps, so please proceed with care.