It implies something that is unexpected, surprising, or even bizarre.
Here are some examples of how you could use "insolite" in a sentence:
* "Le spectacle était insolite et fascinant." (The show was unusual and fascinating.)
* "J'ai rencontré un personnage insolite au marché." (I met an unusual character at the market.)
* "C'est une ville insolite avec des bâtiments historiques et des boutiques modernes." (It's an unusual city with historical buildings and modern shops.)
So, if you're looking for a word to describe something that's unexpected, striking, or simply different, "insolite" is a great option.