Great Sand Dunes National Park, CO

Rocky Mountain National Park, CO

Petrified Forest National Park, AZ

Palau

Northern Mariana Islands, Saipan

Guam

North Cascades National Park, WA

Mt. Rainier National Park, WA

Great Basin NP, NV

Glacier National Park, MT

Sequoia, Kings Canyon & Yosemite National Parks

Copenhagen, Denmark