Consisting of concentric circles of stone surrounded by a moat (called a "henge"), Stonehenge was constructed in several stages over thousands of years.
Takes more than a " grain" of talent to earn it and it takes more than an hourglass with some serious quartz movement to sculpture a work that " rocks" .
Since the oracle bones were dated, we have exact details for events like when cities were built, astronomical events; when taxes were raised or paid, when animals and objects were sold and even when marriages were arranged.
Constructed 6,000 years before Stonehenge, it's estimated to have been built before the invention of the wheel, even the idea of farming, or the tools that could have constructed its own existence.
Most of the tallest buildings in the world were built in the 1990s and in the twenty-first century, but the two tallest buildings in the US were built much earlier.
And he didn't find stone ruins because, unlike Cusco and Tenochtitlan the Amazon's indigenous people built with wood and earth, which decompose over time.
The International Space Station (ISS) began construction in 1998 and spent 12 years, with the coordination from 15 countries, to build its 15-module structure.