The Sihlhochstrasse is part of the Swiss motorway A3, and was meant to be continued over the river Sihl and connected in the centre of Zurich to the A1 motorway as part of the "Zürcher Expressstrassen-Y" road project.  It was abandoned and remains in the half-finished state illustrated here.  This spherical panorama is created in equirectangular projection.
<a href="//commons.wikimedia.org/wiki/User:Domob" title="User:Domob">Daniel Kraft</a>
CC BY-SA 3.0
<span class="int-own-work" lang="en">Own work</span>