In Spain this day known as the Día de los Reyes Magos, known in our country as the Epiphany, is celebrated differently then other countries. In Spain children make letters towards the Three Kings to ask them to bring gifts to them. Just as the children here, in America, with Santa. This day is the day you always exchange gifts. This tradition is mostly for kids, but some adults still celebrate it. The tradition is to leave polished shoes out on the eve of January 5th, as well as sweets, milk, or wine.
On the morning of January 6th kids wake up to presents under the tree, and have a breakfast of Roscón de Los Reyes. Roscón is a donut shaped, sweet bread sprinkled with candied fruit. Inside of this is a figurine of baby Jesus, as well as dried fava bean. Whoever finds the figurine is crowned "king" or "queen" of the house for the whole day, and whoever finds the dried bean has to buy the Roscóns' next year.
This is what a Roscón looks like.