Note Flagship — 75,313 public-domain paintings, structured captions (CC0-1.0)

Note Animals & the natural world — 31.9k mixed-medium works (mixed PD)

Note Human-made objects & decorative arts — 26.3k (mixed PD)

Note Mythological & fantastical beings — 13.1k (mixed PD)

Note Painting-forward fine-art core — 13.9k (mixed PD)

Note The human figure & portraiture — 28.0k (mixed PD)

Note Unattributed old masters (MIT)

Note Impressionist movement (MIT)

Note Landscape genre (MIT)

Note Portrait genre (MIT)

Note Religious / biblical (MIT)

Note Renaissance period (MIT)

Note Baroque period (MIT)

Note Impressionist landscapes, cross-cut (MIT)

Note Vincent van Gogh (MIT)

Note Japanese woodblock prints (MIT)

Note Claude Monet (MIT)

Note Rembrandt (MIT)

Note Pierre-Auguste Renoir (MIT)