. - from the top of la popa, we get a real feel for the magnitude of a city that grew too quickly. the expansion of this fragmented hub of one million inhabitants has created a series of rather eclectic neighborhoods. (marelvy pena hall) there is an old saying that if you come to cartagena, and you never come up here, it's like you've never been. because this is the only place where you can see cartagena as it is. you have the old city in the very back and then you have manga. and manga is an island inside the city that started to be populated at the beginning of the century. people left, especially the upper classes, they left the old city and they came to live in manga, where they built some really beautiful mansions. which unfortunately, many of them have been destroyed later on to build smaller houses or the high rises that you see today. but there are still some old mansions there which are now national monuments. and in the very back there, that's bocagrande, the modern section of cartagena. traditionally, that's the area where the upper classes live, but also, for a long tim