Roman architecture was able to make great structures such as the Colosseum and the Pantheon through its use of

innovative building techniques and materials such as concrete, arches, vaults, and domes. The Romans also developed advanced engineering skills, allowing them to construct large and durable structures that could withstand the test of time. Additionally, the Romans incorporated elements of Greek and Etruscan architecture into their own designs, creating a unique and impressive architectural style that has influenced buildings around the world.