Found one in Poland as well: https://en.wikipedia.org/wiki/Skull_Chapel
EDIT: and in Portugal https://www.ancient-origins.net/ancient-places-europe/story-...
And in Czech Republic: https://en.wikipedia.org/wiki/Sedlec_Ossuary
And in Peru: https://en.wikipedia.org/wiki/Basilica_and_Convent_of_San_Fr...
And another list with 40 entries: https://www.atlasobscura.com/lists/definitive-guide-to-ossua...