One of the world\u2019s oldest mountain resorts, Chamonix has long made it easy for romantics to enjoy its alpine wonders\u2014starting with a cogwheel train to the Mer de Glace glacier. Nowadays, visitors can stroll inside the \u201csea of ice\u201d while noting poignant markers indicating how dramatically it\u2019s shrinking. For European travel information, visit ricksteves.com.