the former German Ruhr area are many, very interesting, industrial
sites which can be visited for free today. One of these is "Zollverein"
in Essen. This complex with coalmine and colliery, built in the
1920ties, has become since 2002 part of the world cultural heritage
! When you're interested for this, you'll find more information
lenses: circular fisheye 8 mm ; wide angle 17-35 mm
PS Have also a look to the monochrome red
version of this serie !