Oshi Castle, located in Gyoda City, Saitama Prefecture, has a rich history dating back to the late 15th century. Despite facing numerous attacks, this formidable castle never succumbed. While the original structure no longer stands, visitors can still witness the earthen foundation of the main castle, the towering stone walls, the Korai Gate, and other fascinating ruins. The reconstructed "Three-storied Tower" from the Edo Period now houses captivating exhibits, offering visitors a glimpse into the past. Ascend to the observation room on the highest floor for a breathtaking view of Gyoda City. My visit at twilight revealed an eerily silent and empty atmosphere, evoking the enchanting aura of this ancient site.