Oregon is a state in the Pacific Northwest region on the West Coast of the United States. The Columbia River delineates much of Oregon's northern boundary along Washington state, while the Snake River delineates much of its eastern boundary along Idaho. Oregon was inhabited by many indigenous tribes before Western traders, explorers, and settlers arrived. Oregon became the 33^rd state in 1859. Today, at 98,000 square miles (250,000 km2), Oregon is the ninth largest. Oregon is one of the most geographically diverse states in the U.S. marked by volcanoes, abundant bodies of water, dense evergreen and mixed forests, as well as high deserts and semi-arid shrublands. At 11,249 feet, Mount Hood, a stratovolcano, is the state's highest point. Because of its diverse landscapes and waterways, Oregon's economy is largely powered by various forms of agriculture, fishing, and hydroelectric power. Oregon is also the top timber producer of the contiguous United States, and the timber industry dominated the state's economy in the 20^th century.

The Oregon Dunes are a unique area of windswept sand that is the result of millions of years of wind and rain erosion on the Oregon Coast. These are the largest expanse of coastal sand dunes in North America. Some dunes tower up to 500 feet (150 m) above sea level, providing numerous recreational opportunities including off-road vehicle use, hiking, photography, fishing, canoeing, horseback riding, and camping.

The Lava River Cave near Bend, Oregon, is part of the Newberry National Volcanic Monument, which is managed by the United States Forest Service. At 5,211 feet (1,588 m) in length, the northwest section of the cave is the longest continuous lava tube in Oregon. While the cave's discovery in 1889 was officially credited to a pioneer hunter, the presence of obsidian flakes near the cave has led archaeologists to conclude that Native Americans knew about the cave long before settlers arrived in central Oregon.

Crater Lake National Park is located in southern Oregon. Established in 1902, Crater Lake is the fifth-oldest national park in the United States and the only national park in Oregon. The park encompasses the caldera of Crater Lake, a remnant of a destroyed volcano, Mount Mazama, and the surrounding hills and forests. The lake is 1,949 feet (594 m) deep at its deepest point, which makes it the deepest lake in the United States. The caldera formed 7,700 years ago during the violent climactic eruptions and subsequent collapse of Mount Mazama and the relatively moist climate that is typical of the crest of the Cascade Range. Crater Lake has no streams flowing into or out of it. All water that enters the lake is eventually lost from evaporation or subsurface seepage. The lake's water commonly has a striking blue hue, and the lake is refilled entirely from direct precipitation in the form of snow and rain.

Smith Rock State Park is an American state park located in central Oregon's High Desert. Its sheer cliffs of tuff and basalt are ideal for rock climbing of all difficulty levels. Smith Rock is generally considered the birthplace of modern American sport climbing, and is host to cutting-edge climbing routes. It is popular for sport climbing, traditional climbing, multi-pitch climbing, and bouldering.

Mount Hood, called Wy'east by the Multnomah tribe, is a potentially active stratovolcano in the Cascade Volcanic Arc of northern Oregon. It was formed by a subduction zone on the Pacific coast and rests in the Pacific Northwest region of the United States. It is located about 50 miles east-southeast of Portland. In addition to being Oregon's highest mountain at 11,249 feet (3,429 m), it is one of the loftiest mountains in the nation based on its prominence.

The Columbia River Gorge is a canyon of the Columbia River in the Pacific Northwest of the United States. The canyon stretches for over 80 miles as the river winds westward through the Cascade Range forming the boundary between the State of Washington to the north and Oregon to the south. Extending roughly from the confluence of the Columbia with the Deschutes River in the east down to the eastern reaches of the Portland metropolitan area.

Portland is the largest city in the U.S. state of Oregon and the seat of Multnomah County. It is a major port in the Willamette Valley region of the Pacific Northwest, at the confluence of the Willamette and Columbia rivers. The city covers 145 square miles and had an estimated population of 647,805 in 2017, making it the 26^th most populous city in the United States, and the second-most populous in the Pacific Northwest.