Rough mockup of user interface shown here:
Metadata for the above mockup is here:
https://github.com/bendalby82/famous-castles/blob/main/data/famous-castles.csv
Images for the above mockup are here:
https://github.com/bendalby82/famous-castles/tree/main/images
More castles can be found here:
https://en.wikipedia.org/wiki/Castle