A surprise visit is an unexpected appearance or visit by someone to a place, usually without prior notice or announcement. It is often used to describe a visit from a friend or family member who shows up unannounced at someone's home or office. The purpose of the visit may be social, to catch up with someone or to celebrate a special occasion, or it may be for business purposes. Regardless of the reason, a surprise visit is meant to be unexpected and often brings joy, excitement or shock to the person being visited.