Incongruity

Canon 350D + EF 28-135mm IS USM @ 65.0mm, f/8.0, 1/250s, ISO 100.
Rotterdam, Netherlands, 2005.

This is one example of a heritage preservation leads to incongruity.  Instead of demolishing the old building, which I suspect that it is listed as a protected monument by the Rotterdam city council, Unilever created a new modern architecture on top of it. Well, you obviously can't see a harmony in this picture.