Famed mountaineer Reinhold Messner has spent the last decade of his life building a network of museums dedicated to his favorite landscape. His final museum, situated on the summit of Mount Kronplatz in northern Italy, is the work of late architect Zaha Hadid. The multi-level concrete structure is built into the side of the mountain and acts like a tunnel, allowing visitors to walk through the landscape itself. At 7,464 feet above sea level, the museum is accessible only by cable car, but the trek is worth it—an observation deck looks out onto the snow-capped peaks of the Dolomites, as well as the Zillertal and Ortler mountain ranges.