The Swiss mountain peak Eiger is a 5-letter word. It is a 3, 970-meter high mountain in the Bernese Alps of Switzerland. The peak is part of the Jungfrau-Aletsch region, which is a UNESCO World Heritage Site. The second Swiss mountain peak is ALP, a 3-letter word. It is a 3, 539-meter high mountain in the Pennine Alps of Switzerland. The third Swiss mountain peak is Rigi, a 4-letter word. It is a 1, 798-meter high mountain in the Swiss Alps of Switzerland. All three peaks are popular tourist destinations and offer stunning views of the surrounding landscape.