It's amazing.

And it's heartbreaking to see the low resolution. I hope the author will explore the large catalogs of high resolution public domain/CC0 images available.

Because the core implementation is really, really nice. I just want to look much more closely.

Paris Musées, Metropolitan Museum of Art, National Gallery of Art, Rijksmuseum are some sources I can think of - there are more, I'm sure.

And I _wish_ the super-high rez ones at https://artsandculture.google.com/ would fall on that list too, but I guess that's not the case.