Originally this castle was built in 1242 and consisted of just 2 towers. In the fourteenth century, more additions were added to the castle expanding its grounds.
At this location, you can visit and go for a walk inside an impressive single-arch aqueduct bridge that was built during the Roman times back in 3 B.C.
This landmark consists of an eerie underground tunnel underneath the Cathedral of Aosta where visitors can walk through and marvel at beautiful arches.