When we think of a "large built structure," we often think of massive buildings, towering skyscrapers, or immense stadiums. However, there are many other words that can be used to describe these substantial constructions. Some synonyms for "large built structure" include edifice, monument, establishment, complex, facility, organization, institution, installation, construction, and infrastructure. Each of these words conveys the idea of an impressive architectural achievement, a grand facility, or a significant physical landmark. Whether it's a government building, a religious temple, an industrial plant, or a public park, these synonyms capture the sense of awe and admiration that such structures often evoke.