Chateau Mercian Katsunuma

Japan's oldest winery with beautiful vineyard tours in Yamanashi.

Chateau Mercian Katsunuma Winery, located in the Koshu Valley of Yamanashi Prefecture, is a pioneer of Japanese winemaking with roots dating back to 1877. The winery is renowned for its Koshu grape wines — a uniquely Japanese variety — and has earned international recognition for producing elegant, terroir-driven wines that rival Old World counterparts.