So, are the things that we have learned about still around. It is one thing to think that they exist but it is also another thing to see it. There are still aqueducts in use today, also there is still the Colosseum. We still use these designs today maybe not the exact design but still the thought we use to transport water and architecture. Also we still use roads today. It is hard to believe that they still work. Lastly we still use parts of their government today.