What traditions or beliefs brought from Spain continue in the United States

One tradition we share that you often see at kids parties is the "Pinata", usually made of cardboard and brightly decorated, participants are blindfolded and given a stick to break it open.

"Misa de Gallo" is a religious tradition in Spain, known to us Midnight Mass on Christmas Eve.

"Reyes de Magos" is another religious tradition originating from Spain. We know it as Three Kings Day.

"Las Serenadas" is considered a romantic tradition in Spain. It involves a mariachi band or arriving with a group of friends to serenade or play music to a lover.

A "Siesta" (afternoon/nap) is also a classic tradition in Spain.

Explanation:

Good source for more info:

20 Spanish & Hispanic Culture Traditions from Spain, Mexico, Latin America

https://takelessons.com/blog/spanish-traditions-z03