Oda Castle, Medieval fortification in Tsukuba, Japan
Oda Castle is a medieval fortification at the base of Mount Hokyozan in Tsukuba, Japan, with moats, earthen walls and a central bailey. The site covers 40 hectares and includes several defensive layers connected by restored pathways.
The fortress was built in 1185 by Hatta Tomoka and grew into an important stronghold during the Nanbokucho period. Prince Kitabatake Akiie used the site as a base for the Southern Court.
The excavated remains of two ponds inside the main courtyard show how wealthy the family who lived here was. Water features like these were a sign of high social standing during medieval times.
A free information center at the entrance displays findings from archaeological digs and offers an overview of the site. Marked paths lead through restored sections and are suitable for walking.
One of the largest surviving dry moats in Japan lies here and shows an unusual pattern on the bottom. Archaeologists found the structure was shaped like a paper sliding door.
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