In Celtic mythology, Mag Mell ("plain of joy"), also called Tir na n-Og ("land of youth"), was the underworld. Unlike the underworld in most mythologies, Mag Mell was a pleasurable paradise, either an island or at the bottom of the ocean.
... Ireland, Museums in the Republic of Ireland
Berkshire
Reading Museum[?] (Replica of the Bayeux Tapestry)
Buckinghamshire
Bletchley Park Museum[?] (Enig ...