The Pyramids ‘ Egypt
No list of the greatest structures of the ancient world would be complete without a mention of the famous Pyramids in Egypt. The Pyramid of Djoser, the oldest of the Pyramids, is estimated to have been built around the year 2630 B.C. Still today, experts have not been able to come up with a solid conclusion to explain how the ancient Egyptians built these perfectly aligned buildings using nothing but physical strength. It is presumed that as many as 100,000 slaves worked over the years to build these immense, mysterious tombs, which are still considered one of the Seven Wonders of the World.
Built without the machinery and modern technology we have come to depend on today, these ancient landmarks are nothing short of impressive.
The Roman Aqueducts ‘ Italy
The aqueducts were constructed by the ancient Romans around 145 B.C. and were used to bring in water for the Roman Empire. The really fascinating part? The aqueducts work on gravity alone, meaning that the design is what allowed the water to be siphoned. This is one of the earliest examples of engineering and quite an impressive one at that, especially considering the lack of resources available at the time. The aqueducts still stand intact today. Many were long lost and forgotten, taken over by shrubs and vines, but many are still visible in the same form they were thousands of years ago.