Between the late 1st century and early 2nd century AD, the structure known at the time as Farum Brigantium was built (in what is now the city of A Coruña, Spain). Centuries later, it would become known as the Tower of Hercules: the oldest Roman lighthouse in the world, still in operation today.
This is a recreation I made imagining what those moments during the construction of the famous lighthouse must have been like.