drive-through redwood tree in the Mariposa Grove, Yosemite National Park, California. Ok, so this same picture hung in my grandparents lake house for about 20 years! I can never see this pic without feeling like an 8 year old. Warm memories!
Sequoia National Park. You can backpack to camp here ($15 wilderness permit required; purchase at Mineral King Ranger Station), camp at nearby Cold Springs or Atwell Mill campgrounds, or stay at the rustic cabins of Silver City Mountain Resort on Mineral King Road.