Great St Bernard is one of the most ancient passes through the Western Alps, with evidence of use as far back as the Bronze Age and surviving traces of a Roman road. In 1800, Napoleon's army used the pass to enter Italy, an event depicted in Jacques-Louis David's Napoleon at the Saint-Bernard Pass and Hippolyte Delaroche's Bonaparte Crossing the Alps, both notable oil paintings. Having been bypassed by easier and more practical routes, particularly the Great St Bernard Tunnel which opened in 1964, its value today is mainly historical and recreational.