That place where the bmw e90 press event took place is called:
La Ciudad de las Artes y de las Ciencias de Valencia
Like city of art and science of valencia.
http://www.cac.es
website seems to be down at the moment - but check it out when it is online again. you will recognize the buildings on the nice bmw pics.
It's a dry river bed where they built these modern building. There's also some kind of aquarium.
There was also a VW dealer or event a few years ago.
Nice place!