Carousels are those results that you see running horizontally across the top of a Google search results page when you search for something with local intent. Google Carousel results are part of Google’s Knowledge Graph results, and are triggered based on selected vertical searches (restaurants, accommodation, leisure items such as favourite series in 2016 or rosters of your favourite sports team). Here is an example.
And another.
Search phrases that have local intent also trigger carousel results to appear in Google. Carousel results have data that incorporates information from Wikipedia, Google’s own database of facts, as well as information from Freebase’s database of facts.
Carousel results currently impacts 0.6% of the 10,000 queries Moz monitors across different industries. Travel and Hospitality businesses are the most affected. What’s interesting about Carousel results is that they always include images. I suspect these come from Google’s image results.
Here are more examples with links
