Joshua Tree National Monument
On August 10, 1936, President Franklin Roosevelt used the power of the 1906 Antiquities Act to create Joshua Tree National Monument.
Rising tall above the sand dunes in the American Southwest, Joshua trees are dominating figures with twisted branches and sharp, spiky leaves. Found in the Mojave and Sonoran Deserts, Joshua trees grow about three inches per year, which is fast for their climate. They are known to reach soaring heights, up to 49 feet. Unlike most trees, they do not have growth rings, so it is difficult to determine their age. Joshua trees can live for hundreds of years, but it is believed some have survived for a thousand.