One of the things the Romans are most famous for is their architecture. The Romans brought a lot of new ideas to architecture, of which the three most important are the arch, the baked brick, and the use of cement and concrete. With these new ideas Roman was able to create magnificent structures and engineering marvels that have stood the test of time.
Ancient Rome’s Aqueducts: Highly advanced Roman waterway system known as the Aqueducts, are among the greatest achievements in the ancient world. The running water, indoor plumbing and sewer system carried away disease from the populated cities or towns. The Aqueducts, being the most visible and glorious piece of the ancient water system, stand as a testament to Roman engineering.
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Roman Forum: The forum was initially a market-place in Rome and the site was also used for festivals and funerals. Justice was also administered here and it naturally became a place business, then for politics and popular assemblies, and later on for amusement.
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The Colosseum: The Roman Colosseum is the most famous monument to have survived from the ancient world. It was built nearly two thousand years ago for the purpose of hosting violent gladiator games.
Video of the Roman Colosseum: