Takamatsu Castle (Tamamo Castle)
Shikoku Region
Takamatsu Castle, located in central Takamatsu city on Shikoku Island, is a rare example of a Japanese castle featuring seawater moats, earning it the nickname Tamamo Castle or "seaweed castle." Built between 1588 and 1590 by Ikoma Chikamasa, it served as the headquarters of the Takamatsu Domain, governing eastern Sanuki Province. The castle's strategic coastal position guarded the Seto Inland Sea and the vital sea routes against rival clans. Its compact design includes a small inner bailey with a three-story tenshu (main keep), surrounded by stone walls, water moats, and masugata-style gates. Over time, the Matsudaira clan took over and added a five-story tenshu before the Meiji Restoration. Although the original tenshu was dismantled in 1884 and many structures lost during World War II, several Edo-period buildings remain designated as Important Cultural Properties. Today, the castle grounds are a public park featuring historic yagura towers, beautifully preserved gates, and the Hiunkaku villa with scenic gardens. Takamatsu Castle is celebrated as one of Japan's Top 100 Castles and offers visitors a glimpse into feudal Japan's coastal defenses and samurai heritage.
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Tip: Visitors are advised to visit Takamatsu Castle during spring for cherry blossoms or autumn for colorful foliage, enhancing the scenic moat views. Tickets can be purchased on-site, but checking the official website for any seasonal events or temporary closures is recommended. The castle is easily accessible within a 10-minute walk from JR Takamatsu Station. Discounts may be available for groups, seniors, and students. Early arrival in the morning helps avoid crowds and enjoy peaceful exploration of the castle grounds and gardens.
Interesting facts
- •Takamatsu Castle is one of only three Japanese castles with seawater moats, alongside Imabari Castle and Nakatsu Castle.
- •The castle's nickname, Tamamo Castle, means "seaweed castle," referencing its seawater moats.
- •Several Edo-period structures such as the Kita-no-maru Tsukimi Yagura and Mizute Gomon gate are designated Important Cultural Properties.
- •The Hiunkaku villa on the castle grounds, built in 1917, is also a National Important Cultural Property with gardens recognized as a National Place of Scenic Beauty.
- •The castle was listed among Japan's Top 100 Castles by the Japan Castle Foundation in 2006.
History
Takamatsu Castle was constructed from 1588 to 1590 by Ikoma Chikamasa after the Toyotomi conquest of Shikoku, replacing Hiketa Castle as the clan's stronghold.
Its coastal location served strategic military and economic purposes, guarding the Seto Inland Sea routes.
After the Battle of Sekigahara in 1600, the Ikoma clan's territory was reduced, and they were eventually replaced by the Matsudaira clan in 1642, who rebuilt parts of the castle including a five-story tenshu.
The castle was used by the Imperial Japanese Army until 1874, after which many original structures were dismantled or destroyed.
Despite damage during World War II, key buildings were preserved and designated as Important Cultural Properties.
The site opened to the public as a park in 1955 and was recognized as a National Historic Site.
Place Guide
Kita-no-maru Tsukimi Yagura1676
A moon-viewing turret dating from the middle Edo Period (1676), designated as an Important Cultural Property. It exemplifies traditional Japanese castle architecture and offers scenic views over the moats.
Kita-no-maru Mizute Gomon Gate1830-1867
A late Edo Period gate (1830-1867) that served as an important entrance to the castle's inner enclosures. It is recognized as an Important Cultural Property for its historic architectural style.
Higashi-No-Maru Ushitora Yagura1677
An eastern turret built in the middle Edo Period (1677), serving as a defensive watchtower and part of the castle's fortifications. It is an Important Cultural Property.
Hiunkaku Villa and Gardens1917
Former Matsudaira family villa built in 1917, designated as a National Important Cultural Property. The surrounding gardens are recognized as a National Place of Scenic Beauty, offering a tranquil retreat within the castle park.
Contact
Phone: 087-851-1521
