European Cathedrals (like the dome of cologne or the Hagia Sophia in istanbul), the Roman limes (great wall structures, plural), Roman aqueducts and the Colloseum, some later pyramides were designed by hellenistic architects (successors of Alexander the Great and his fellowers), further in the past come Stonehenge and other megalite structures, and many more - sadly lost - antique wonders of the world.
European Cathedrals (like the dome of cologne or the Hagia Sophia in istanbul), the Roman limes (great wall structures, plural), Roman aqueducts and the Colloseum, some later pyramides were designed by hellenistic architects (successors of Alexander the Great and his fellowers), further in the past come Stonehenge and other megalite structures, and many more - sadly lost - antique wonders of the world.
(The cologne cathedral was mostly build in th 19th century)
It was finished in 1880 but construction startet on the 15th of August in 1248.