The empire known for its contributions to architecture, such as the Pantheon, is the Roman Empire. This ancient civilization, peaking from the first century BCE to the fifth century CE, is celebrated for its architectural innovations and monumental structures. The Pantheon, constructed around 126 CE, is particularly renowned for its large dome and oculus, representing advanced engineering techniques and artistic vision. Roman architecture emphasized grandiosity and functionality, influencing countless structures throughout history and serving as a model for subsequent architectural styles in Western civilization, including neoclassicism and modern architecture.