13 Best National Parks to Visit in the US This Summer

4. Zion National Park, Utah: Red Rock Canyons and Desert Adventures

Zion National Park's towering sandstone cliffs and narrow slot canyons create a desert paradise that captivates summer visitors with its dramatic landscapes and unique hiking experiences found nowhere else on Earth. The park's centerpiece, Zion Canyon, carved by the Virgin River over millions of years, features massive sandstone walls that rise up to 2,000 feet above the canyon floor, creating a natural cathedral of red, pink, and cream-colored rock formations. Summer's long daylight hours provide ample time to explore iconic adventures such as The Narrows, where hikers wade through the Virgin River between towering canyon walls that narrow to just 20 feet wide in some sections, creating an otherworldly experience of walking through liquid sculpture. The challenging Angels Landing trail rewards brave hikers with panoramic views from a narrow rock fin 1,488 feet above the canyon floor, though the final half-mile requires navigating steep switchbacks and chains while exposed to significant drop-offs. Zion's diverse ecosystems range from desert floor to high plateau, supporting over 900 plant species and wildlife including desert bighorn sheep, mountain lions, golden eagles, and the endangered California condor, which has been successfully reintroduced to the area. The park's shuttle system, operating during peak season, provides convenient access to trailheads while protecting the canyon environment from vehicle congestion and pollution. Summer temperatures in the canyon can exceed 100°F, making early morning and evening the optimal times for hiking, while the higher elevations of the Kolob Canyons section offer cooler alternatives and spectacular red rock formations with fewer crowds. The park's night sky program takes advantage of its Dark Sky designation, offering visitors exceptional stargazing opportunities during clear summer evenings.