'''Hokkaidō''' (北海道, literal meaning: "North Sea Route"), formerly known as '''Ezo''', '''Yezo''', '''Yeso''', or '''Yesso''', is the second largest island and largest [[prefectures of Japan|prefecture]] of [[Japan]]. The Tsugaru Strait separates it from Honshū, although it is connected to Honshū by the underwater Seikan Tunnel. The largest city on Hokkaidō is the prefectural capital, [[Sapporo]].