An Idiom/phrase/adjective for an imaginary place where everything is perfect [closed]

A place where unrealistic and impossible things can happen.

Is there an idiom/expression/phrase that connotes to such a stretch of the imagination?


You are looking for utopia.

Google defines it as:

an imagined place or state of things in which everything is perfect. The word was first used in the book Utopia (1516) by Sir Thomas More.

Merriam-Webster says it is often capitalized as Utopia and defines it as:

an imaginary place in which the government, laws, and social conditions are perfect

often capitalized : a place of ideal perfection especially in laws, government, and social conditions