Translation of Anhäufung

Yesterday, I heard a very good example to explain my point: On their journey more than ten years ago, the presidential couple Mr. and Mrs. Clinton visited Egypt. They were welcomed by the president.
I have been there once for vacation, but I was too little. It was twelve years ago, when I was still a child. I went there with mom and dad and all I cared about is beach and sand, no culture.
Puerto Madryn was a boring city, but it was the hub to see the Peninsula Valdes, a nature reserve listed as a World Heritage site by UNESCO. We did not know what to expect but new that we would see Pinguins