Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Ivrea, industrial city of the 20th century' has mentioned 'Alps' in the following places:
Occurrence Sentence Text Source
However, the town first officially appears in history as an outpost of the Roman Republic founded in 100 BC, probably built to guard one of the traditional invasion routes into northern Italy over the Alps.
The origin of the tradition to throw oranges is not well understood, particularly as oranges do not grow in the foothills of the Italian Alps and must be transported from Sicily.