Bregna is a fictional city featured in the animated film "Titan A.E." It is depicted as a technologically advanced metropolis that serves as a refuge for humanity after Earth is destroyed. The city is characterized by its towering structures and futuristic design, showcasing the achievements of human ingenuity. In the film, Bregna is governed by a powerful corporation known as the Cale Corporation, which controls resources and technology. The city represents hope for the surviving humans, as they strive to rebuild their civilization and protect themselves from external threats, particularly from the alien race called the Dredge.