Llanfairpwllgwyngyll is a large 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. Wikipedia
You know what? I knew this because I checked Naomi Watts' Wikipedia page after I saw her in Birdman. She was born there (or grew up there, something like that) and I was screaming when I read that name.