Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Old City of Berne' has mentioned 'Fort' in the following places:
Occurrence Sentence Text Source
On the eastern end of the peninsula a small fort, called Castle Nydegg, was founded by Berchtold IV in the second half of the twelfth century.
Either when the fort was built or in 1191, the city of Bern was founded around the eastern end of the peninsula.