longer versions. 10. Llanfairpwllgwyngyllgogerychwyrndrobwllllantysiliogogogoch (short form Llanfairpwllgwyngyll ), also spelled Llanfair Pwllgwyngyll and commonly known as Llanfair PG or Llanfairpwll , is a village and community on the island of Anglesey in Wales , situated on the Menai Strait next to the Britannia Bridge and across the strait from Bangor .