Italian Side, Alps
Continue to Swiss Side at Switzerland Road Ways, San Bernardo Pass
Cliffs and hairpin turns, called switchbacks, repeat, up and up, around, then sudden street lamps mark the summit, a modern alert to vehicles that summit congestion is coming. For foot travelers, climbers, or those on horseback or donkey, the way to the summit is marked by pyramid piles of rock called cairns. See more panoramic views of the way up at ://www.summitpost.org/mountain/rock/155249/pointe-valletta.html/
At the summit, Italian side, find Saint Bernard himself, San Bernardo di Mentone, sometimes called San Bernardo di Aosta because he was born near Aosta, Italy, at Mentone, in 1023 or so. See this translation of his life at ://www.santiebeati.it/dettaglio/33350/. Do a search for that, and hit the translation button.
The Saint. He lived in these mountains for years, for most of each year, set up this comprehensive shelter hostel, equipped to serve travelers for longer periods as needed. Horses, cargo, all accommodated. However, it is disputed whether he did all that or not - see ://www.vtliving.com/saintbernards/index.shtml/; the dates do not gibe for the founding and when he died, and the naming came centuries later. History is never clear, and beliefs and tradition count for more than later facts, is that so? Sure.
There are a number of buildings at the summit: for coffee, for rescue equipment, bad weather lay-overs, a good stretch. Before starting up the Pass, put your fleece or sweaters at the top of your stuff for an easy put-on at the top.
Weather changes fast. Here is the alpine lake at the summit, looking back at the Italian side with its hostel, the statue of Saint Bernard, and rest stop. Sun breaking through, but that did not last.
Fast weather changes. Still above freezing, but cold, windy.
We had periodic rain and hail on the way up, not serious, then back to sun part-time. See an overview of history and weather and famous people passing this way at ://en.wikipedia.org/wiki/Great_St_Bernard_Pass/
Just around the lake is the passport checkpoint for Switzerland. The border is not open because Switzerland is not part of the European Union.