Babylon source of Humarabis code - the penultimate legal system governing property, fines, land management, dowries, adoption, conflicts and slavery. Marduk the city god assumed control of the universe, declaring babylon the center of the universe.
A somewhat fanciful but interesting gardens with a Brugel inspired tower of Babylon
Another city bites the dust while a king looks on. If you surrendered quickly and made a deal your city could be taxed and made a vassal state and a king could get to be a vassal state and perhaps fight later. Their troops would be expected to serve the empite. If you made it expencive to take you horrible public torture, piles of heads, burning bodies, flailed skins nailed to city walls, slavery for all could result.
A four horse 4 man chariot with shield specialists protecting the archer. This represents an enormous expence in labour, skilled crafters and money. More wood in the car also. A battlewagon could also drop troops behind enemy ranks. Very effective on broken rank and undiciplined troops or routing units. War dog mastiff handlers good for this too. Chariots carring you too and from a dugeon would be cool.
So called hanging gardens was a later wonder during last flowering of bronze age Mesopotamia. The ziggurats are from earliest times. European druidry kept up with many ideas like astrology and taxonomic lists of flora and fauna for rote learning and basic literacy with occult properties to boot. Stonehenge is less impressive if you consider it was the slowest structure ever built by humans.
Anyway my hope for all this is for people see as potential gamer setting, or for ideas for a civilization in a fantasy world or as a distant civilization who left ruins and ghosts behind.