Tachibana Castle, Mountain fortress in Fukuoka Prefecture, Japan
Tachibana Castle is a mountain fortress in Fukuoka Prefecture built across three peaks of Mount Tachibana. Defensive structures, stone walls, and water sources occupy each summit to command views of the surrounding landscape.
The fortress was founded in 1330 by Ohtomo Sadatsumi and became a strategic stronghold during clan conflicts in the 16th century. It lost importance when its stones were moved in 1601 to build a larger castle nearby.
The castle shows how medieval builders used mountain slopes as part of their defenses rather than fighting against them. Stone foundations and water sources were positioned to work with the natural features instead of replacing them.
The site is best accessed via hiking trails starting from nearby stations, requiring sturdy footwear and planning for uneven mountain terrain. The multiple peaks mean visitors should allow time to explore the different summit areas at a relaxed pace.
Some of the stone walls from this site were dismantled and reused to construct another fortress in the region. This repurposing reveals how medieval ruins often provided building materials for later projects rather than standing as permanent monuments.
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