10Grand Canyon, Arizona
No list of must-see places in the USA would be complete without mentioning the Grand Canyon. Carved by the Colorado River over millions of years, this awe-inspiring natural wonder stretches 277 miles long, up to 18 miles wide, and over a mile deep. The breathtaking views of the canyon’s colorful layers are unlike anything else on Earth. Visitors can hike the South Rim, take in the view from the Grand Canyon Skywalk, or experience the canyon from a different perspective with a rafting trip down the river. Whether you’re an outdoor enthusiast or simply seeking a majestic experience, the Grand Canyon is a place that must be seen to be believed.