Lake Oswego Railroad Bridge

Tryon Creek is a 4.85-mile (7.81 km) tributary of the Willamette River in the U.S. state of Oregon. Part of the drainage basin of the Columbia River, its watershed covers about 6.5 square miles (16.8 km2) in Multnomah and Clackamas counties. The stream flows southeast from the Tualatin Mountains (West Hills) through the Multnomah Village neighborhood of Portland and the Tryon Creek State Natural Area to the Willamette in the city of Lake Oswego. Parks and open spaces cover about 21 percent of the watershed, while single-family homes dominate most of the remainder. The largest of the parks is the state natural area, which straddles the border between the two cities and counties. The bedrock under the watershed includes part of the last exotic terrane, a chain of seamounts, acquired by the North American Plate as it moved west during the Eocene. Known as the Waverly Hills Formation, it lies buried under ash and lava from later volcanic eruptions, sediments from flooding and erosion, and layers of wind-blown silt. Two dormant volcanoes from the Boring Lava Field are in the Tryon Creek watershed. Named for mid-19th century settler, Socrates Hotchkiss Tryon, Sr., the creek ran through forests of cedar and fir that were later logged by the Oregon Iron Company and others through the mid-20th century. Efforts to establish a large park in the watershed began in the 1950s and succeeded in 1975 when the state park was formally established. As of 2005, about 37 percent of the watershed was wooded and supported more than 60 species of birds as well as small mammals, amphibians, and fish. At the same time, the human population was about 18,000.

The Maurice Crumpacker House is the former residence of Maurice E. Crumpacker, a popular Oregon attorney and United States Congressman in the 1920s. The house was built by Portland architect Wade Hampton Pipes in 1923, and is located in the Dunthorpe neighborhood of Multnomah County, Oregon, just outside the Portland municipal boundary. It was added to the National Register of Historic Places in 1992.

Dunthorpe is an unincorporated suburb of Portland, Oregon, United States. It is located just south of the Portland city limits and north of the Multnomah County line on the west side of the Willamette River. Lewis & Clark College, Tryon Creek State Park, and Lake Oswego are nearby. It has been designated as a Census Designated Place since 2020.

The John V. G. Posey House, located in Portland, Multnomah County, Oregon, is listed on the National Register of Historic Places.

The Elliott R. Corbett House is a historic home built in the Colonial Revival style in 1915, and located in the Dunthorpe neighborhood south of Portland, Oregon, United States. This house, along with its nearly-identical sister project (built a year later for Elliott Corbett's brother Henry), are the finest examples of the residential work of Whitehouse and Fouilhoux, one of Portland's leading architecture firms in the second decade of the 20th century. It also represents the early stages of the development of Dunthorpe as a country-style suburb for Portland's elite. Elliott R. Corbett was a scion of the prominent Corbett family, which made its fortune in banking and inland shipping.The house is listed on the National Register of Historic Places.

Spring Park, or Spring Park Natural Area, is a public park in Milwaukie, Oregon, United States. The park opened in 2015 after two decades of planning and construction, and provides access to Elk Rock Island. The boundaries of the park have been disputed with neighbors.

Angkor I is an outdoor stainless steel sculpture by Lee Kelly, located at Millennium Plaza Park in Lake Oswego, Oregon, in the United States. The 1994 sculpture stands 14 feet (4.3 m) tall and weighs 1,000 pounds (450 kg), and was influenced by his visit to Southeast Asia one year prior. In 2010, Angkor I appeared in an exhibition of Kelly's work at the Portland Art Museum. In 2011, it was installed at Millennium Plaza Park on loan from the Portland-based Elizabeth Leach Gallery. The Arts Council of Lake Oswego began soliciting donations in 2013 in an attempt to keep the sculpture as part of the city's permanent public art collection, Gallery Without Walls. The fundraising campaign was successful; donations from more than 40 patrons, including major contributions from the Ford Family Foundation and the Oregon Arts Commission, made purchase of the sculpture possible. Angkor I has been called a "recognizable icon" and a "gateway" to the park's lake.

The Percy A. Smith House is a historic house located in the unincorporated Dunthorpe neighborhood of Multnomah County, Oregon, just south of the Portland municipal boundary. It is listed on the National Register of Historic Places.

The Lake Oswego Odd Fellows Hall, in Lake Oswego, Oregon, was built in 1890. It was listed on the National Register of Historic Places in 1979. It served historically as a meeting hall of the local Independent Order of Odd Fellows chapter, which formed in 1888. It also has served as a specialty store and in other uses.The 31 feet (9.4 m) by 60 feet (18 m) building is one of the oldest in Lake Oswego.

Elk Rock Island is an island on the Willamette River in the U.S. state of Oregon. The 12- to 13-acre (4.9- to 5.3-ha) island, formed 40 million years ago by a volcano, was given to Portland by Peter Kerr in 1940. The city of Milwaukie took ownership of the park in April 2016. The island is accessible via Spring Park.

Millennium Plaza Park is an urban park in Lake Oswego, Oregon, United States. It features a large paved plaza, a fireplace, a reflecting pond, and a pergola, with views of Lakewood Bay. The park opened in 1999, and hosts a farmers' market. It has also been a start and finish site for the annual Lake Run event.

New Urban High School (NUHS) is a magnet high school located in Oak Grove, Oregon, United States.