In 1924, Lionel Sternberger, the auspiciously named cook at Pasadena’s Rite Spot, fused bun, beef, and cheese to create what many consider the world’s first cheeseburger. Celebrate this culinary legacy at the second annual Cheeseburger Week, when Pasadena restaurants (even sushi bars) honor the dairy-draped patty in all its forms. Indulge in cheesy specials, go on a Cheeseburger Crawl, and vote in the Cheeseburger Challenge. More Information.