several windows were broken at the römisch-germanisches museum in cologne, germany by plywood that was covering a fountain near cologne cathedral. the wood caused major damage to the encasing of a roman mosaic dating to the 3rd century. the römisch-germanisches museum building was originally constructed around the mosaic. as of january 2007, it was still unclear whether the mosaic had suffered damage, as museum staff had announced the clean-up would at least take a week due to the fragility of the exhibit. museum manager bernhard ostermann had estimated that the mosaic was damaged in 100 to 150 places