In the Irish mythology, Tír na nÓg was considered a place beyond the edges of the map, located on an island far to the west. It could be reached by either an arduous voyage or an invitation from one of its fairy residents.
Excerpt from
visitstratford.ca/explore-the-artistic-side-of-culture/:
Commissioned in 2005, Tír na nÓg was installed by Mark Czajkowski. Meaning the Land of Youth, it is an ornate metal gateway leading from Downie Street into an intimate park. Tír na nÓg is a popular otherworld in Irish mythology thought to be on an island far beyond the edges of maps and reachable only by a long, challenging journey or by invitation from a resident fairy.
