castle in the air (plural castles in the air)
- (idiomatic) A visionary project or scheme; a day-dream; an idle fancy; a pipe dream; any plan, desire, or idea that is unlikely to be ever realized; a near impossibility.
- Completing the metaphor, one is said to build a castle in the air.
- castle in the skies
- castle in Spain
idea that is unlikely to be ever realized
- Portuguese: castelo de vento m, castelo no ar m
- Russian: возду́шный за́мок (ru) m (vozdúšnyj zámok)
- Cyrillic: куле у зраку f pl
- Roman: kule u zraku f pl
- Spanish: castillos en el aire m pl, castillos de naipes m pl
- Swedish: luftslott (sv) n