Saint Fermin is the patron saint of Pamplona, a city in northern Spain. His feast day is celebrated on July 7th, marking the beginning of the famous San Fermín Festival. The festival includes various events, such as traditional music, dancing, and the iconic running of the bulls. The running of the bulls involves participants running in front of a group of bulls that are let loose on a designated course through the streets of Pamplona. This event attracts thousands of visitors each year, making it one of the most well-known festivals in the world.