The "Download Now" link directs you to the iTunes App Store, where you must continue the download process. You must have iTunes installed in order to open the link, and you must have an active iTunes account to download the application. This download may not be available in some countries.
From Liquid Air Labs:
PLACE TO BE.In the media port in Dsseldorf, Germany you find RIVA a perfect blend of a restaurant, a lounge, and a bar. Delicious food combined with chill-out music create an upscale atmosphere - add a terrace with a harbor view, which is undoubtedly one of the most beautiful in the city! To wines from all over world international specialities of a gourmet cuisine are served.Get a first impression of RIVA and its regularly updated menu - download and app for your iPhone or iPod Touch for free.NOTE: The language of the application is German.