The 114 gassho-zukuri farmhouses standing in Ogimachi today represent a 250-year continuous adaptation to snow loads exceeding four metres each winter. Engineers studying the 60-degree thatched roofs in the 1950s discovered that the A-frame design, literally meaning "praying hands," distributes weight so efficiently that replacement timbers need resetting only every 30 to 40 years. UNESCO inscribed the village in 1995 not for age alone but for the intact social structure that still maintains communal roof-thatching rotations, a labor system documented since the Edo period. Shirakawa-go sits 600 metres above sea level in the Shogawa River valley, where geographic isolation preserved construction techniques that vanished elsewhere during Meiji-era modernization. The largest houses, including Wada-ke built in the 1800s, housed extended silk-farming families across four floors: livestock on ground level, living quarters on the second, silkworm cultivation on the third and fourth under the thatch. When the Miboro Dam flooded the lower valley in 1961, nine farmhouses were relocated upslope to Ogimachi, forming the nucleus of what became Japan's first privately conserved heritage landscape before government designation arrived decades later. Today the village operates under a 300-yen to 600-yen entry system for individual house museums while keeping the settlement itself free to walk. The Ogimachi skyline, framed by the Hakusan range to the east, draws 1.7 million visitors annually, most arriving between April and November when the Tokai-Hokuriku Expressway remains snow-free. Winter illumination events in January and February require advance lottery registration due to capacity limits set at 1,800 visitors per evening. Coach services from Nagoya cover the 160-kilometre route in approximately three hours, typically pairing Shirakawa-go with Takayama's Sanmachi Suji merchant quarter in a single-day circuit. The village opens at 08:00, and early arrivals claim the Shiroyama viewpoint before tour groups fill the hillside observation deck after 10:00. Gassho-zukuri architecture remains a living vernacular—18 farmhouses still function as family residences, their occupants bound by conservation covenants that govern everything from roof pitch to exterior paint.