This week in the United States it\'s time to celebrate all things green and leafy with it being both National Park Week and Arbor Day this coming Friday. With entrance fees to national parks across the country being waived, what better opportunity is there to go on an adventure and discover some of the country\'s most spectacular wildlife. Whether it\'s hiking, swimming or kayaking that floats your boat, there is something for everyone, and we thought we would highlight a few of our favorite national parks to inspire you to get outside and experience nature. Glacier Bay National Park (pic) If you want to see glaciers crashing into the sea, orcas hunting their prey or brown bears effortlessly grabbing salmon from a rushing stream, head to Glacier Bay National Park in Alaska, where the majestic wilderness will keep your jaw dropped for hours on end. At this time of year you may also be lucky enough to see humpback whales breaching. Grand Canyon National Park Perhaps the desert is calling you, in which case Grand Canyon National Park would be a good call. It is no wonder why nearly 5 million people visit each year, with spectacular vistas of the mile deep, 277 mile long canyon. This terrain is home to the prickly pear cactus, puma and even the Critically Endangered California condor. Voyageurs National Park For those of you who aren\'t afraid of a few mosquitoes and like to paddle a canoe, head north to Voyageurs National Park in Minnesota. This land of over 10,000 lakes is home to a variety of species such as bald eagles, moose, grey wolves, and American black bears.