sign at Llanfairpwllgwyngyllgogerychwyrndrobwllllantysiliogogogoch in North Wales The 58 character name Llanfairpwllgwyngyllgogerychwyrndrobwllllantysiliogogogoch is the famous name of a town on Anglesey an island in Wales , Great Britain . This place's name is actually 51 letters long, as certain character groups in Welsh are considered as one letter, for instance ll , ng