Owing to its delightful setting, Bellagio, an oasis of peace on the shores of the lake, has been a holiday destination for centuries. Bellagio is situated upon the cape of the land mass that divides Lake Como in two. The city centre occupies the tip of the promontory, while other districts are scattered along the lake shores and up the slopes of the hills. The great Pleistocene glaciations with their imposing flows coming from the Valtellina and Valchiavenna modelled the actual landscape of Lake Como: at least four times the glaciers went as far as Brianza to the south. From the ancient glacial blanket only the highest tops emerged, one of them Mount St. Primo, which obliged the glaciers to divide into two arms.
The historic center of Bellagio is along the lake shore with three parallel streets, Mazzini, Centrale and Garibaldi in ascending order. Cutting across them to form a sloped grid are seven medieval stone stairs ("salite") running uphill. The Basilica of San Giacomo and a stone tower, sole relic of medieval defences ("Torre delle Arti Bellagio"), sit in a piazza at the top. Nowadays, a luxuriance of trees and flowers is favoured by a mild and sweet climate.
(This is a brief summary from Wikipedia. Original content coming soon.)