This is the famous Matterhorn mountain; one of the tallest and most iconic in Europe. My wife and I stayed in the beautiful town of Zermatt, Switzerland near the base, which is only accessible by most folks via train (only taxis, commercial trucks, etc. are allowed in the town). The mountain is breathtaking in nearly any condition, but we got lucky with a phenomenal sunset and a banner cloud that made the peak look like a chimney continuously churning out smoke.