See the new upper level (worst case) estimates that were just revised to DOUBLE the amount predicted by IPCC's 2014 5th assessment of one metre of global sea level rise.  Below is the NAS report and an Al Jazeera story.

https://www.pnas.org/content/early/2019/05/14/1817205116

Somers Cocks comments on new Kiel University report in Nature magazine.  
Many World Heritage Sites around the Mediterranean are at grave risk from sea-level rise by 2100, report says
The most threatened are on the coast of the northern Adriatic: Venice and the Venetian fortifications; the early Christian town of Aquileia, the late Roman imperial complex of Ravenna with its Byzantine mosaics, and the Renaissance city of Ferrara with the delta of the river Po. ​

Here's a link to analysis of sea level rise impact on ten UNESCO World Heritage Sites.