The name Brig is derived from Briva, or "bridge." Its older houses are very Italian in appearance, while its most prominent buildings (Stockalper Palace, former Jesuits' college and Ursuline convent) all date from the 17th century, and are due to the generosity of a single member of the local Stockalper family,the baron Kaspar Stockalper.The prosperity of Brig is bound up with the Simplon Pass, so that it gradually supplanted the more ancient village of Naters opposite, becoming a separate parish (the church is at Glis, a few minutes from the town) in 1517. Its medieval name was Briga dives. The opening of the carriage road across the Simplon (1807) and of the tunnel beneath the pass (1906), as well as the fact that above Brig is the steeper and less fertile portion of the Upper Valais (then much frequented by tourists), greatly increased the importance and size of the town