What are other languages in siesta?

It seems like you're asking about "siesta" in the context of languages. However, "siesta" isn't a language. It's a Spanish word that refers to an afternoon nap, traditionally taken during the hottest part of the day in Spain and other Mediterranean countries.

Perhaps you meant to ask about:

* Languages spoken in Spain: Spanish is the official language of Spain. Other languages spoken include Catalan, Galician, Basque, and Aranese.

* Languages spoken in other countries where siestas are common: Many languages are spoken in countries where siestas are a cultural practice, including Italian, Greek, Arabic, Portuguese, and others.

Please clarify your question if you were asking about something different!