BRICK Convention | LEGO Fan Expo in San Antonio is a convention for LEGO fans of all kinds, from longtime builders to curious first-timers. It's held at Freeman Expo Hall in San Antonio, a big, open event space that suits a show built around colorful bricks and creative displays. Expect the buzz of a fan gathering, where people swap ideas, admire builds and geek out over their favorite sets. Bring your inner kid, your favorite minifigure and a friend who loves to build.