Regarded by the world as one of the greatest empires to ever exist, the Roman Empire had many accomplishments that we are thankful for to this day. And Roman architecture is definitely one of them. The living testament to its glory are the constructions that still stand to this day, despite around 2000 years of fire, war, wear and scavenging people. It's hard to imagine modern day Rome without the Colosseum despite the fact that it stood to see the Empire rise and fall, hundreds of generations and cultures come and go. It always was and will be one of the greatest symbols of the Roman Empire. Yet while we see what is left in our day, it is always fascinating to see what the iconic structures looked like back in their glorious days. So scroll down below and check out these comparisons.