Ancient civilizations built stone basins to capture and hold precious drinking water.

On one of those immense staircases, upon whose space modern civilization would build a whole house.

Only a mighty civilization could have built this!

Other civilizations also build Orbitals, although it is not known if all of them are similarly managed.

First, a civilization may fail and no longer build and rebuild its structures.

From 800 to 1400, this ancient civilization farmed the area and built ingenious irrigation canals.

As civilizations build atop one another, so had the Yrythny built the ring.

Even with a civilization to build, people still found time to talk about it.

We can make a civilization, a real civilization, built on real understanding of ourselves and our universe.

The Aztec civilization built enormous constructions from stone tools and human labour.