Summer is considered the best time for vacations. But spring is the most spectacular season to see the natural wonders of the USA.

There are natural wonders all around the world, but U.S. travelers don’t need to go far to see Mother Nature at her best.

The highest waterfall in North America is at Yosemite National Park in central California. Yosemite Falls drops 2,425 feet.

“It’s one of the most iconic sites,” says Jim Sano, vice president of travel and tourism and a supporter of sustainable tourism at the World Wildlife Fund.

Cochran says snow packs from the Sierra Mountains surround the valley, and glaciers feed off the runoff. The snowmelt causes the robust waterfalls.

“You see wind taking the mist of all that water and carrying it off to one side,” Cochran says. “You can hear it thundering during this season. Seeing the waterfall at work is an incredible thing.”

Peak runoff occurs in May or June. The waterfalls become a trickle or are completely dry by August, according to the National Park Service.

The Park Service highlights 10 trails but says there are many more to observe in the park.

Each year, sandhill cranes make a 5,000-mile round-trip journey between Mexico and Canada, stopping along the way in Kearney, Neb., along the Platte River to take a break and nourish themselves. The town and its visitors oblige them.

“They help to remind all of us the seasons of our lives,” Cochran says. “They are very uplifting; the sheer number of birds. They are all in motion. They are all making bird calls. To me, it’s a real celebration of what it means to be on a planet that has so much life.”