Yeah...I am a huge National Park nut, but alas I am also poor, and the most beautiful ones are all in the west. We knocked out 5 of them, plus Little Big Horn NB, Devils Tower NM and Mount Rushmore NM two years ago, but it will be awhile before I can put together another trip like that. Zion, Bryce Canyon and Arches are just after the Glacier NP, Yosemite and the GC in my list. Then Crater Lake, Mt Ranier and Death Valley.
If you have Death Valley on your wish list, here are a couple of nearby destinations to consider:
(1) Should you wind up in Sequoia National Park, do not neglect the stretch of US 395 which parallels the eastern boundary of the park. From Lone Pine, you can take the Whitney Portal Road, which provides access to the Alabama Hills and the trailhead for Mount Whitney, the highest mountain in the lower 48. See
Great Drives - California's Highway 395 - the Owens Valley and
Mount Whitney - Wikipedia, the free encyclopedia.
(2) 42 miles north of Lone Pine, via US 395, is Big Pine, which is a jumping-off point for the Ancient Bristlecone Pine Forest. From Big Pine, turn east onto State Hwy 168 just north of Big Pine. Follow Hwy 168 east 13 miles to White Mountain Road. Turn left (north) and drive 10 miles to the Schulman Grove Visitor Center. The Bristlecone pines can be viewed from the parking area of the visitor center and along three nature trails (
Inyo National Forest - Special Places).
Notes pertaining to the White Mountain Road:
(A) This road will take you above 10,000 feet, so dress accordingly.
(B) The Methuselah Grove in the Ancient Bristlecone Pine Forest is the location of the "Methuselah," which is believed to be the oldest living tree on earth.
(C) "At 4,841 years old, this ancient bristlecone pine is the oldest known non-clonal organism on Earth. . . Methuselah's exact location is kept a close secret in order to protect it from the public. (An older specimen named Prometheus, which was about 4,900 years old, was cut down by a researcher in 1964 with the U.S. Forest Service's permission)."
(D) For a representative photo of this tree, see
The world's 10 oldest living trees: Methuselah | MNN - Mother Nature Network.