Olympic National Park, Washington, USA

"The first thing that comes to mind with spring is beautiful flowers and nature," Blau says. And in Olympic National Park, where the coastline is punctuated by staggering cliffs, craggy shores and a wildflower-laden meadow, it's easy to engage with your natural surroundings. In spring, you can catch beautiful blooms and the gray whale migration, Blau adds. The area also boasts glacier-topped mountains, and a rugged 730-mile coast where seabirds, wind-swept trees and tucked-away beaches abound. During your visit, you can also enjoy camping, fishing, boating, hiking and ranger-led programs, among other outdoor pursuits.