Yosemite contains three groves of massive, ancient Giant Sequoia trees, perhaps the largest living things on Earth. Mariposa Grove is by far the largest and easiest to access, with more than 500 Sequoias to admire—some almost 3,000 years old—and some like Grizzly Giant, whose base measures 96 feet (29 meters) around and might be the largest in the world.
Hike less than a mile from the parking lot to wander through the California Tunnel Tree, take the two-mile trek uphill to the Mariposa Grove Museum (located inside a historic log cabin) or consider hopping on the one-hour tram tour that operates from May through October.
If you arrive early enough or visit during the off season, you may be able to find a spot in the Mariposa Grove parking lot. For easiest access, though, catch the free seasonal shuttle bus, which picks up visitors near the park’s South Entrance station and in Wawona at the general store. Visiting Mariposa Grove is free. Tram tour rides cost between $26.50 for an adult and $19 for a child; children under five ride for free.