The tower stands for the castle of LOCATION@1 , the longtime seat of the dukes of LOCATION@2 since its construction in the 13th century ; it remains the northernmost mountain-top castle in present-day LOCATION@3 .

The tower stands for the castle of LOCATION@1 , the longtime home of the dukes of LOCATION@2 since it was built in the 13th century ; it remains the northernmost mountain-top castle in present-day LOCATION@3 .
