Existing Met artwork articles that can be translated into another language - be sure to also include the CC0 image of the artwork (which has "MET" in the filename) in the new article.
This is using the mw:Content translation tool. In some cases machine translation is a part of the process, but you must make major edits to the text to make it a real translation.
Organized by destination language, with all Met artwork articles not yet in that language (click on under "Translate!" to start a particular article):
More languages are available on request!