Since its founding on August 25, 1916, the U.S. National Park Service has assembled 419 protected units, of which 62 hold the ...

Paul Ndung'u on April 9, 2025 stands beside a wall constructed using recycled bottles.

UC Davis professor Hugh Safford found the highest living tree in California on a recent hike through the High Sierra.

Visit this breathtaking park in Costa Rica where lush jungle trails lead to waterfalls, wildlife sightings, and swimming ...

Two Arizona national parks were named among the best parks for seeing wildlife like mountain lions, bison and birds. Here's where to go to see animals.

The NASA satellite image shows rust-red rock formations in Wyoming—evidence of 220-million-year-old 'megamonsoons'.

Arizona's national parks offer majestic views, a forest of towering saguaros and a look back into time with a preserved ...