One of the best sunset locations in Yosemite National Park, CA is the Sentinel Bridge which provides an unobstructed view of Half Dome and a reflection in the Merced River.
Badwater Basin in Death Valley National Park, CA is the lowest point on the North American continent at 212 feet below sea level. Some years with good winter rains, the basin will flood for miles at only an inch deep. Those are the Panamint Mountains in the background.
Red Rock Canyon State Park, CA