this building is the entrance to the (first) elbtunnel, you can walk through to cross the river and get to the other side, cars have to take the elevator to get down. very beautiful. and not a lot tourists.
(I've been asked what kind of images the Wizards would give, so I had a look for the ones I took with a revue-branded one:)
The Revue Direct 700 F »
link is essentially a Keystone Wizard plus an integrated electronic flash (another difference is you can lock the shutter to not accidentally hit it. clever.), rebranded for a big german catalogue company. As far as I know it was only available there. Mentioned link claims it was even produced by Polaroid - who knows. It is not known much about the (or a) connection between Keystone and Polaroid.