Who can resist a drive up the side of the world’s largest volcano? This bucket-list road trip on the island of Maui ascends from sea level to 10 thousand feet in just 38 miles, going from lush island tropics to lunar-like lava beds around the enormous crater (don’t worry, it’s dormant). The switchbacks pass through different habitats, landscapes and climate zones all the way up. Ascend predawn or predusk to see the sunrise or sunset on the summit. At the top, you’ll be rewarded with the Puu Ulaula Overlook, a 360-degree glass-enclosed observation point with jaw-dropping views. This high point on the island can be shockingly chilly for Hawaii, so dress accordingly.