The following list presents the full set of National Register of Historic Places listings in Multnomah County, Oregon. However, please see separate articles for listings in each of Portland's six quadrants.
Hot Lake Hotel is a historic Colonial Revival hotel originally built in 1864 in Hot Lake, Union County, Oregon, United States. The hotel received its namesake from the thermal spring lakes on the property, and operated as a luxury resort and sanitorium during the turn of the century, advertising the medicinal attributes of the mineral water and drawing visitors worldwide. It is also the first known commercial building in the world to utilize geothermal energy as its primary heat source.
Inlow Hall, the administration building at Eastern Oregon University in La Grande, Oregon, United States, was built in 1929. It was listed on the National Register of Historic Places as the Administration Building in 1980.
This is a list of properties and districts in the western municipalities of Puerto Rico that are listed on the National Register of Historic Places. It includes places along the western coast, and on islands, and on the western slope of Puerto Rico's Cordillera Central.
John Virginius Bennes was an American architect who designed numerous buildings throughout the state of Oregon, particularly in Baker City and Portland. In Baker City he did an extensive redesign of the Geiser Grand Hotel, designed several homes, and a now-demolished Elks building. He moved to Portland in 1907 and continued practicing there until 1942.
The Anthony–Buckley House is a historic Queen Anne style house in La Grande, Oregon, that was built in 1902. It was listed on the National Register of Historic Places in 1985.
The Richardson–Ulrich House is a historic residence in Klamath Falls, Oregon, United States.
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 John C. Duckwall House is a historic residence in Hood River, Oregon, United States.
The First Presbyterian Church is a church and historic church building located in downtown Roseburg, Oregon, United States.
The Liberty Theater is a historic theater building in La Grande, Oregon, United States.
