Posadas are Mexican Christmas celebrations held over nine nights leading up to Christmas that recreate Mary and Joseph's search for shelter in Bethlehem through processions. On Nochebuena, there are processions from churches with colorful floats, music, dancing, and piñatas, culminating in a large fireworks display.

3. Posadas are an important part of Mexican Christmas
celebrations. The word posada means "inn" or "shelter" in
Spanish, and these celebrations recreate Mary and Joseph's
search for a place to stay in Bethlehem. Posadas are held on
each of the nine nights leading up to Christmas, from
December 16 to 24th.

7. On Nochebuena, there are processions from a lot
of different churches that fan all the way out to
zocalo. There are a lot of colorfully-decorated
floats, music, traditional dancing, and piñata
prizes for everyone in attendance. The main event
of this fiesta is the huge fireworks display that is
put on.