9 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.
The notion of a perpetual motion machine turned out to be nothing more than a castle in the air.
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.
The entrepreneur's vision of a self-sustaining lunar colony was often dismissed as a mere castle in the air.
The scientist's proposal for a time-travel device was met with skepticism, labeled by critics as nothing more than a castle in the air.
The proposal to build an eco-friendly city in the heart of the desert was initially seen as a castle in the air but gained support over time.
The inventor's dream of creating a perpetual motion machine was dismissed as a castle in the air by many skeptical scientists.