Where is the isle of innisfree located?

The Isle of Innisfree is a fictional place created by poet W.B. Yeats in his poem "The Lake Isle of Innisfree." While there is no actual isle by that name, it is often associated with a real location, Innisfree Island, in Lough Gill, County Sligo, Ireland, where Yeats spent time during his childhood. The poem evokes themes of nature, peace, and solitude, reflecting Yeats's longing for a simpler, more tranquil life.