The city of Dyrrhachium on the Adriatic coast was the only part of the Balkans that remained in Norman hands .
This fell the following Spring after a siege , effectively ending the attempted Sicilian conquest of the Empire .
The city of Dyrrhachium on the Adriatic coast was the only part of the Balkans that remained in Norman hands and this fell the following Spring after a siege , effectively ending the attempted Sicilian conquest of the Empire .