The frond house is Wada House, the biggest house at Shirakawa-go. Water is seen discharged over the traditional farm houses at Shirakawa-go, the UNESCO World Heritage site on November 9, 2014 in Shirakawa, Japan. This annual drill is held to prevent fire. (Photo by Kaz Photography/Getty Images)

Fishes asideditch at Shirakawa-go, the UNESCO World Heritage site on November 9, 2014 in Shirakawa, Japan. (Photo by Kaz Photography/Getty Images)

Water is seen discharged over the traditional farm houses at Shirakawa-go, the UNESCO World Heritage site on November 9, 2014 in Shirakawa, Japan. This annual drill is held to prevent fire. (Photo by Kaz Photography/Getty Images)

The traditional farm houses and coloured leaves at Shirakawa-go, the UNESCO World Heritage site on November 9, 2014 in Shirakawa, Japan. (Photo by Kaz Photography/Getty Images)

The traditional farm houses at Shirakawa-go, the UNESCO World Heritage site on November 9, 2014 in Shirakawa, Japan. (Photo by Kaz Photography/Getty Images)

The traditional farm houses at Shirakawa-go, the UNESCO World Heritage site on November 9, 2014 in Shirakawa, Japan. (Photo by Kaz Photography/Getty Images)

The traditional farm houses and coloured leaves at Shirakawa-go, the UNESCO World Heritage site on November 9, 2014 in Shirakawa, Japan. (Photo by Kaz Photography/Getty Images)

The traditional farm houses and coloured leaves at Shirakawa-go, the UNESCO World Heritage site on November 9, 2014 in Shirakawa, Japan. (Photo by Kaz Photography/Getty Images)

The traditional farm houses and coloured leaves at Shirakawa-go, the UNESCO World Heritage site on November 9, 2014 in Shirakawa, Japan. (Photo by Kaz Photography/Getty Images)

Water is seen discharged over the traditional farm houses at Shirakawa-go, the UNESCO World Heritage site on November 9, 2014 in Shirakawa, Japan. (Photo by Kaz Photography/Getty Images)

Water is seen discharged over the traditional farm houses at Shirakawa-go, the UNESCO World Heritage site on November 9, 2014 in Shirakawa, Japan. (Photo by Kaz Photography/Getty Images)

The traditional farm houses and coloured leaves at Shirakawa-go, the UNESCO World Heritage site on November 9, 2014 in Shirakawa, Japan. (Photo by Kaz Photography/Getty Images)

Water is seen discharged over the traditional farm houses at Shirakawa-go, the UNESCO World Heritage site on November 9, 2014 in Shirakawa, Japan. (Photo by Kaz Photography/Getty Images)

Water is seen discharged over the traditional farm houses at Shirakawa-go, the UNESCO World Heritage site on November 9, 2014 in Shirakawa, Japan. (Photo by Kaz Photography/Getty Images)

Water is seen discharged over the traditional farm houses at Shirakawa-go, the UNESCO World Heritage site on November 9, 2014 in Shirakawa, Japan. (Photo by Kaz Photography/Getty Images)