Impressive gorge in basalt rocks, more than 30 m deep and some 470 m long. At the far end is the 30 m tall Oneonta Falls. Above the gorge on the Oneonta stream are three more waterfalls.
Impressive, 1,588 m long lava cave, the largest in Oregon. Rediscovered in 1889 but obsidian flakes testify to the earlier discovery of the caves by the Native Americans.
Gorgeous, 54 m tall waterfall with a single plunge over a rock overhang. Nearby are 10 other waterfalls, many of them quite impressive.
Gorgeous canyon of Columbia River, up to 1,200 m deep. The canyon is some 130 km long and has numerous very impressive waterfalls. Microhabitats along the canyon contain unique, endemic species of plants.
Historical lodge with an ornate interior that has many features of the Prairie Style. It was constructed in 1936-1938.
Gorgeous structure – the oldest of the existing Baháʼí temples. The enormous, round, white temple was built in 1912 – 1953.
The world’s first major building in Post-Modern style, constructed in 1982. This 15 floor high public office building has caused much controversy due to its bold design and also flaws.
Spectacular, vertical cliffs at Crooked River. A popular site for climbing, the cliffs are up to 180 m high.
Spectacular outcroppings of colored rocks over a larger area. There are red-colored laterite outcroppings, dark-colored layers of lignite, and grey-colored mudstone, siltstone, and shale layers. Rocks contain many fossils of early horses, camels, and other animals.
Giant canyon of Snake River, the deepest one in the United States. The canyon is up to 2,436 m deep and up to 16 km wide. Snake River here has many spectacular rapids.