castles in the air

US /ˈkæsəlz ɪn ðə ɛr/
UK /ˈkæsəlz ɪn ðə ɛr/
"castles in the air" picture
1.

hayaller, boş umutlar

plans or hopes that are unlikely to come true

:
He's always building castles in the air about becoming a millionaire.
Her zaman milyoner olma hakkında hayaller kuruyor.
Don't waste your time on castles in the air; focus on achievable goals.
Hayaller kurarak zamanını boşa harcama; ulaşılabilir hedeflere odaklan.