Elk Rock Gardens of the Bishop's Close

The Whidden–Kerr House and Garden, also known as High Hatch Estate, is a historic property located in the unincorporated communities of Riverwood and Dunthorpe in Multnomah County, Oregon, south of Portland and north of Lake Oswego, Oregon. William M. Whidden of Whidden & Lewis designed the house in 1901, to be his own residence, and it was built the same year. Whidden and his family lived in the house until 1911, when he sold it to businessman Thomas Kerr, Sr. (1896–1925). It later passed to Kerr's son, Thomas Kerr, Jr., and ultimately remained with the Kerr family until 1987.The house is the "best expression" of Prairie School architecture by Whidden & Lewis, one of Portland's most prominent architectural firms of the period. A separate carriage house, now in use as a garage, is included as a contributing feature in the historic designation. The property includes a formal garden, which was "further developed by Kerr and his wife, the former Mabel Macleay", after Kerr acquired the estate in 1911. The site overlooks the Willamette River. The property was listed on the National Register of Historic Places in 1988.

The Pierre Rossiter and Charlotte Hines House is a house located in Portland, Oregon listed on the National Register of Historic Places. Constructed in 1927, the house illustrates Colonial Revival architecture.

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.

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.

The John V. G. Posey House, located in Portland, Multnomah County, Oregon, 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.

The Donald and Ruth McGraw House, located in the Dunthorpe neighborhood of Multnomah County, Oregon, just outside the Portland municipal boundary, is listed on the National Register of Historic Places. It was the home of the late Donald and Ruth McGraw.It was designed by architect Jamieson Parker.

Milwaukie Riverfront Park is an 8.5-acre (3.4 ha) park adjacent to downtown Milwaukie, Oregon, United States.

Kellogg Creek is a tributary, about 4.5 miles (7.2 km) long, of the Willamette River in the Portland metropolitan area of the U.S. state of Oregon. It begins near Lake Lenore in Johnson City and flows northwest to meet the river at Milwaukie. Kellogg Creek is joined about midway along its course by Mount Scott Creek, its major tributary, which enters the main stem near North Clackamas Central Park.Mount Scott Creek and its tributaries, Phillips and Dean creeks, drain the western flanks of Mount Scott. Kellogg Creek empties into the Willamette River slightly upstream of the mouth of Johnson Creek. This is about 18.5 miles (29.8 km) above the Willamette's confluence with the Columbia River, which in turn flows about another 100 miles (160 km) to the Pacific Ocean at Astoria.

The Kellogg Creek Bridge spans Kellogg Creek in Milwaukie, Oregon, United States.

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 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.