Flock of American flamingos, Isabela Island, Galápagos Islands, Ecuador (© Tui De Roy/Nature Picture Library)

Today is National Cousins Day—a perfect excuse to reconnect with the people who know your family stories best and probably helped create a few of them. Think of cousins as your built-in crew: part family history, part lifelong adventure. While it originated in the United States, the day has gained traction in the United Kingdom through social media and family-focused events.