The Tomioka Silk Mill and Related Industrial Heritage
World Heritage Registration Promotion Office
Old Usui Pass Railroad Infrastructure
Built in 1893, the old Usui Line which ran between Yokokawa and Karuizawa adopted the Swiss Abt Rack Rail system to overcome the mountain's steep gradient of 66.7 ‰. Almost all of the bridges, tunnels and other facilities were constructed with bricks under the instruction of British engineers.
( A national important cultural property )