Rome wasn't built in a day (it takes a long time to do something complicated or impressive)
eş: Roma no se hizo en un día
köken: Literally, “Zamora wasn't won in an hour”. In reference to Sancho II who unsuccessfully tried to conquer this Spanish city in 1072 during seven months.
köken: Internationalism; literally, “Rome was not made in a day”. Compare English Rome wasn't built in a day, German Rom ist nicht an einem Tag erbaut worden, Spanish Roma no se hizo en un día.