This is an official audio guide for the World Heritage Site, Tomioka Silk Mill, and the National Treasure, West Cocoon Warehouse. Tomioka Silk Mill Audio Guide: - Provides easy-to-understand explanations for the Tomioka Silk Mill buildings and history - Runtime: Approximately 30 minutes - Available in Chinese, English, French, Korean, and Japanese West Cocoon Warehouse Audio Guide: - Provides easy-to-understand explanations of the West Cocoon Warehouse buildings and exhibited items - Runtime