The planet known for having the highest mountains is Earth. Specifically, Earth is home to Mount Everest, which is the tallest mountain above sea level, standing at approximately 8,848 meters (29,029 feet). The Himalayan mountain range, where Everest is located, contains several of the world’s highest peaks, including K2 and Kangchenjunga. These majestic mountains attract climbers and trekkers from around the globe, many of whom undertake challenging expeditions to reach their summits. The extreme conditions and breathtaking landscapes of these high-altitude regions illustrate Earth's geological diversity and natural beauty.