12 Example Sentences Showcasing the Meaning of 'Castle In The Air'
Despite his ambitious plans, building a space station in his backyard was just a castle in the air.
Little Timmy's dream of befriending a talking unicorn remained a castle in the air.
The notion of a perpetual motion machine turned out to be nothing more than a castle in the air.
Launching a startup without any capital proved to be a castle in the air for the aspiring entrepreneur.
John's plan to learn ten languages in a month was merely a castle in the air.
The dream of achieving world peace overnight remains a castle in the air for many nations.
Winning the lottery and retiring early turned out to be just a castle in the air for Jane.
Tom's idea of a self-cleaning house sounded more like a castle in the air than a practical innovation.
Establishing a colony on Mars is currently considered a castle in the air by most scientists.
As an aspiring artist, her dream of holding a solo exhibition was initially dismissed as a mere castle in the air.
The entrepreneur's ambitious plan to revolutionize the industry was considered a castle in the air by skeptics.
The explorer's dream of discovering a hidden civilization in the jungle was initially dismissed as a castle in the air.