There are several comparisons of similar and different architecture between the Greek and Roman. One reason of this is because the Romans chose to build architecture from examples of the Greek style. An example of this is how the Romans decided to use columns that the Greeks actually previously created but the difference in it is that the Romans added an arch and also a dome. The Romans also design their theaters similar as that of the Greeks except the Romans used the amphitheater for sporting events. When the Romans created architecture they built on a bigger style than that of the Greeks. A great illustration of this is found in the architecture style of the Colleseum that is located in Rome.
Another great example of the comparison of the Romans and Greek architecture is found