Tower of Stockalper, 17th-century tower in Gondo, Switzerland.

The Tower of Stockalper is a five-storey stone building at the entrance to the Gondo gorge, a few dozen metres from the Swiss customs post on the border with Piedmont. Its collapsed half was replaced by a modern concrete wing whose mortar imitates the colour and roughness of the original stone. It now houses a hotel-restaurant, seminar rooms and a museum on the Gondo gold mine.

Kaspar Jodok von Stockalper built the tower between 1666 and 1685 as a warehouse and transshipment point on the Simplon mule track, where muleteers found shelter and supplies. After his death the route fell into disuse and the tower was abandoned. On 14 October 2000 a landslide swept away about half of the five-storey building, killing 13 people in Gondo; it was rebuilt and inaugurated on 31 March 2007.

The tower embodies the role of the Simplon crossing as a vital link between communities on either side of the Alps. Visitors can observe how people lived and conducted trade at this strategic mountain junction.

The tower stands at the entrance to the Gondo gorge, a few dozen metres from the Swiss customs post on the border with Piedmont. The Simplon road and the old mule track pass close by, and the Schmugglerbrunnen fountain faces the building. The five floors are served by a staircase in the tower; the hotel and seminar rooms are reached on foot.

The 2000 landslide tore away roughly half of the five-storey tower and killed 13 people in Gondo. Architects Richard Durrer, Patrick Linggi and Jürg Schmid won the reconstruction competition with a modern concrete wing replacing the lost section, its mortar tinted to match the original stone and left rough so it would weather into the old building. The rebuilt tower was inaugurated on 31 March 2007 and won the Best Architects prize in 2011.