Split into east and west districts, with Tucson, Arizona, smack dab in the middle, Saguaro National Park is home to the nation's largest cacti. Travel to this national park and you will not only see plenty of saguaro, but also cholla, prickly pear, pincushion, and barrel cacti. Visit in spring and there’s a good chance of brilliantly-saturated blooms on those same cacti.

The entire Alaska portion of Chilkoot National Historic Trail will be open this summer for the first time in five years.

A woman is missing in Sequoia National Park after she was swept away in cold, swift river waters.

Drivers in Great Smoky Mountains National Park should be on the lookout for partial road closures this summer due to construction.