この世のものとも思えぬ
Meanings
1
unearthly; otherworldly; out of this world
Set phrase describing something so beautiful, strange, or extraordinary that it seems not of this world. Often used for music, art, or experiences. The negative form 思えぬ is a classical/literary equivalent of 思えない.
See also: この世のものとも思えない
Her singing voice had an unearthly beauty.
The scenery was so fantastical it seemed out of this world.