This tile artwork by Maria Keil, "Pastores" (Shepherds) is at the Museu Nacionaldo Azulejo in Lisbon. Walking through the museum, I came across this, which was easily the coolest piece in the gallery.
And that led me down the rabbit hole of wikipedia, where I learned more about this amazing person, who many among other things did the tile for the Lisbon subway:
https://en.wikipedia.org/wiki/Maria_Keil