The United States boasts a diverse collection of national parks that showcase the country's natural wonders. One must-visit destination is Yellowstone National Park, located across Wyoming, Montana, and Idaho. Yellowstone is renowned for its geothermal features, including geysers and hot springs, as well as its abundant wildlife, such as grizzly bears and wolves. It holds the distinction of being the world's first national park.

Another iconic national park is the Grand Canyon National Park in Arizona. Carved by the Colorado River over millions of years, the Grand Canyon mesmerizes visitors with its vastness and vibrant rock formations. It is a haven for outdoor enthusiasts, offering breathtaking vistas and hiking opportunities.

Yosemite National Park in California is a paradise for nature lovers. It showcases towering granite cliffs, captivating waterfalls, and ancient sequoia trees. Outdoor activities like hiking and rock climbing abound, while photographers find endless inspiration in its stunning landscapes.

The Great Smoky Mountains National Park, spanning Tennessee and North Carolina, attracts the highest number of visitors among all national parks. Its misty blue ridges, cascading waterfalls, and vibrant autumn foliage create a picturesque setting. Visitors can enjoy hiking trails, scenic drives, and wildlife viewing in this breathtaking mountain range.

In addition to national parks, state parks across the US offer their own unique charm. Each state has its own standout parks worth exploring. Examples include Acadia National Park in Maine, with its rugged coastlines and picturesque lighthouses, and Redwood National and State Parks in California, home to the tallest trees on Earth.