Meet the Hovenring!
"The Hovenring was commissioned by the Dutch city of Eindhoven. This suspended circular cycle bridge with its 70-metre high pylon is a new landmark for the city."
It has it's own website http://hovenring.com/ . And it has been nominated for the 2013 Dutch Design Awards!
Bicycle Dutch blog has a neat blog post on the Hovenring, and a great comment about it "This floating roundabout is not something that exists by itself. It is part of an elaborate cycle network. It would be pretty useless to have a ring like this without an underlying connected cycle network so people can actually get to this piece of remarkable infrastructure. More on the Eindhoven network in this follow up blog post."
Have a look at the rest of the Bicycle Dutch post: http://bicycledutch.wordpress.com/2012/08/23/spectacular-new-floating-cycle-roundabout/