"castles in the air" in German castles in the air Luftschlösser Detailed translations for "castles in the air" castles in the air castles in the air(also: pipe dreams, pipe-dreams) Luftschlösser{masculine plural} People spend their whole lives building castles in the air and then nothing ever comes of them. Source: opensubtitles.org Corpus by OPUS Request review Andere verbringen das ganze Leben damit, Luftschlösser zu bauen, und dann wird niemals was draus.