Curved structures are architectural designs that incorporate arcs or curves instead of straight lines. These shapes can be found in various buildings, bridges, and sculptures, providing both aesthetic appeal and functional benefits. The use of curves can enhance stability and distribute weight more evenly, making them an effective choice in engineering. Examples of curved structures include the Sydney Opera House and the Guggenheim Museum in Bilbao. These designs often utilize materials like steel and concrete, allowing for innovative forms that challenge traditional architectural norms. Curved structures can also improve airflow and natural light within a space, contributing to energy efficiency.