The Ogimachi Castle Ruins Observatory stands at the site of a medieval mountain fortress constructed on elevated ground in Shirakawa-go, Gifu Prefecture. Ogimachi Castle was built atop a 60-meter hill with dimensions of approximately 60 meters east-west and 50 meters north-south, though only remnants like earthworks remain today. Uchigashima Tameuji was commanded by the Ashikaga shogun in the mid 1400s to move to the Shirakawa area to control the rich mining operations, establishing a network of fortresses including this one. In 1585, an earthquake destroyed the main Kaerigumo Castle, dealing a fatal blow to the Uchigashima family, and Yamashita Ujikatsu, the last lord of Ogimachi, left to serve Toyotomi Hideyoshi.
The observatory offers panoramic views of Ogimachi village in Shirakawa-go, which was inscribed as a World Heritage site in 1995. This vantage point provides the iconic perspective of the village's traditional gassho-zukuri houses, characterized by their steep thatched roofs designed to withstand heavy snowfall. The observatory is among the most photographed locations in the region, capturing the full sweep of these distinctive farmhouses nestled among rice fields and mountains. The thatched roofs embody the wisdom and ingenuity of ancestors, designed to withstand harsh winters and heavy snowfall.
Visitors can experience seasonal transformations from this elevated position. Spring brings cherry blossom pink, summer wraps the area in refreshing greens, and winter presents a stunning white snowscape. The observatory becomes particularly popular during the Winter Light-Up Festival, though during this event, the Ogimachi Observation Deck requires reservations and is only available to those staying overnight at local lodgings or joining bus tours. The festival is held from 17:30 to 19:30 on select dates in January and February, with tickets costing 1,000 yen per person.
Access to the observatory is available via two routes from Ogimachi village. A shuttle bus operates between the observatory and the village, taking 10 minutes and costing ¥200 one-way. The bus typically runs from 9am to 4pm at 20-minute intervals, departing at every 00, 20, and 40 of each hour, though schedules vary by season. Walking uphill takes approximately 15 to 30 minutes along a gentle mountain trail. Admission to the observatory is free for general visits. The site includes cafes and souvenir shops, and professional photography services are available at the viewpoint.
