Famous for its cascading hills, lush forests, charming yet quirky urban centers, and many waterways that brush the landscape with azure waves, the Pacific Northwest is undoubtedly one of the most scenic regions in the United States.

The proof is in its national parks: among the greatest in the country, they showcase natural splendor at its finest, including pristine, untouched greenery and tremendous mountaintops that soar straight into the sky.

Whether you’re local to the area, an active traveler chasing new thrills, or simply a longtime lover of nature, each of the following four parks is sure to amaze. So strap on your hiking boots, grab your water, and get ready to scale these unbelievable mountainsides.

Crater Lake National Park

Sitting atop the Cascade Mountain Range in southern Oregon, Crater Lake National Park is home to one of America’s most stunning natural wonders. Formed by the collapse of an ancient volcano thousands of years ago, the brilliantly blue Crater Lake features clean, snow-fed waters that descend into astounding depths. In fact, it is the deepest body of water in America and also one of the world’s clearest.

There are many ways to experience all the majesty the park has to offer. You can take the Rim Drive route around the lake’s edge, which offers panoramic vistas from multiple vantage points, or embark on a boat tour to traverse its near-translucent waters. And don’t overlook the surrounding beauty: make time to hit one or more of the hiking trails that wind through dense forests, peaceful grasslands, and volcanic landscapes. With its breathtaking scenes and numerous recreational adventures, Crater Lake National Park offers an unforgettable experience you won’t find anywhere else.

Mount Rainier National Park

The iconic Mount Rainier isn’t just any ordinary peak; it’s also an active stratovolcano and the tallest mountain in the region, standing at a whopping 14,410 feet. But you don’t have to scale all the way up to enjoy the best views. Rainier’s foothills boast other stunning sights at lower (and safer) altitudes, such as lush forests, diverse wildlife like deer and elk, and rugged cliffsides, making this park a haven for any outdoor enthusiast. For samplings of these ample attractions, venture along any of the many trails, such as the Skyline and Wonderland ones, which certainly live up to their names.

Mount Rainier National Park is a must-visit year-round, but it is especially worth the trip in the cooler months. During fall, you can bear witness to a myriad of reds, oranges, and yellows dotting the landscape before snow arrives in late October. Quickly after, the park becomes wrapped in a snowy blanket, welcoming visitors for activities like snowshoeing, skiing, and sledding. However you decide to enjoy your visit, come prepared to be awed by the majesty of this Pacific Northwest landmark.

Olympic National Park

Nestled right in the heart of Washington’s Olympic Peninsula, Olympic National Park is a diverse and captivating natural wonderland of worldwide acclaim. In fact, it’s even a designated UNESCO World Heritage Site and Biosphere Reserve due to its unusual ecosystem. The park’s rugged coastlines are adorned with tide pools and sea stacks, or sculptural rock structures that rise from the water, while its dense, temperate rainforests—yes, rainforests in often chilly Washington—are blanketed in moss and ferns.

With such variety in landscape, you can experience multiple worlds in just a single adventure. Embark on scenic hikes through the park’s tremendous conifer trees, marvel at the cascading creeks and waterfalls that flow from deep in the Hoh Rain Forest, and meander the pristine Pacific Ocean beaches to savor their serene solitude. Anywhere you wander, you’re sure to spot outstanding views of the jagged Olympic Mountains soundtracked by the charming calls of birds like the winter wren that call these grounds home. With its relaxing nature walks and soothing natural scenery, Olympic National Park may tempt you to stay forever—or at least return once a year.

Sitka National Historical Park

For a trek into the farthest reaches of the Pacific Northwest, set sail to Baranof Island on Alaska’s Inside Passage, a mountainous archipelago that even the most adventurous travelers may overlook. Certainly a hidden gem, Sitka National Historical Park provides a captivating tour through history, particularly the rich cultural heritage of the native Tlingit people. For instance, you can explore the park’s abundant trails to spot towering Tlingit totem poles, artistic and historic wonders that each tell a story of the indigenous people who have inhabited this landscape for centuries.

These trails immerse you in jaw-dropping natural views as well, especially the Mount Verstovia one; ascend from sea level up to the peak’s elevated heights for a bird’s-eye look at the surrounding waters. And be sure to make time for wildlife tours by boat, from which you can spot humpback whales, sea otters, and puffins in their natural habitats.

Acting as a perfect marriage of picturesque beauty and fascinating cultural enlightenment, Sitka National Historical Park lends a profound experience for visitors who want to learn more about Alaska’s fascinating past. However, those simply searching for a challenging hike and sojourn with nature will also find much to enjoy in this park, including glacier scenery that makes this one of the most soul-stirring examples of the Pacific Northwest’s stellar landscapes.