Far out in Lake Superior, Isle Royale National Park offers island wilderness and profound solitude. The park invites visitors to make the crossing and become part of a remote ecosystem where moose and wolves roam. Dense forests blanket ancient ridges, while rocky shores meet frigid, crystal‑clear waters. Designated a national park in 1940, it receives fewer visitors in a year than Yellowstone does in a day.

Indiana Dunes National Park invites visitors to find sand and solitude along 15 miles of Lake Michigan shoreline. The lake's waves and winds shape the park's beaches and towering dunes, while forests, prairies, wetlands, and savannas host over 1,100 plant species. Just an hour's drive from Chicago, it offers an unexpected natural escape amid the Midwest's industrial corridor.

Lassen Volcanic National Park in Northern California is one of the few places on Earth where all four types of volcanoes can be found in a single region. Steaming fumaroles, boiling mudpots, and clear mountain lakes dot its wild landscape. The park centers on Lassen Peak, the world's largest plug-dome volcano, which last erupted from 1914 to 1917. Visitors can explore forests, wildflower meadows, and hydrothermal areas in relative solitude.

Nestled in the Ouachita Mountains of Arkansas, Hot Springs National Park seamlessly blends natural beauty with its rich cultural heritage. The park protects ancient thermal springs, historic bathhouses, stunning mountain views, forested hiking trails, and crystal-clear creeks. People have journeyed here for centuries to bathe in the steamy waters and find respite in the scenic hillsides.

Hawaiʻi Volcanoes National Park protects a dynamic landscape where the earth is constantly remade. From sea level to 13,680 feet, it encompasses the summits of Kīlauea and Mauna Loa, two of the world's most active volcanoes. Lush rainforests, lava tubes, and cooled lava fields coexist with sacred Hawaiian cultural sites in this UNESCO World Heritage Site.

The Guadalupe Mountains National Park are home to an ancient fossil reef that gives rise to the highest peaks in Texas, a landscape of mountains, canyons, dunes, and dark skies that invite hikers to climb to the top of West Texas.

Few sights in the world rival the first glimpse of the Grand Canyon National Park, a mile-deep chasm carved by the Colorado River. This UNESCO World Heritage Site preserves 278 miles of river corridor and the ancestral homelands of at least eleven tribes. Layers of red and gold rock record two billion years of Earth's geologic history, while viewpoints on the North and South rims offer vistas beyond imagination.

Dominating the St. Louis skyline, the Gateway Arch National Park rises 630 feet above the Mississippi River. This sleek stainless steel curve commemorates President Thomas Jefferson's vision of a continental nation and St. Louis's pivotal role in the westward expansion of the United States. Today, the arch and its surrounding park invite visitors to explore history and enjoy sweeping river views.