From Grand Canyon to Petrified Forest to Saguaro National Park, here are the best things to do in Arizona's most beautiful ...

Arizona residents get free admission to state parks on Martin Luther King Jr. Day, and some visitors may be asked to answer a planning survey for the park system.

To truly understand Arizona, you need to understand our national parks. These crown jewels are the keys designed to unlock the incredible scenery, rich history and endless diversity of the state.