Meaning of the word "Once there" in English

What does "Once there" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

Once there

US /wʌns ðɛr/
UK /wʌns ðeə/

Phrase

used to introduce a fairy tale or children's story

Example:
Once there was a beautiful princess who lived in a tall castle.
Once there was a brave knight who set out on a quest.