Oregon City Carnegie Library

The First Congregational Church of Oregon City, also known as Atkinson Memorial Congregational Church, is a historic building located at 6th and John Adams Sts. in Oregon City, Oregon. The congregation was formed in 1844 as a non-denominational Protestant congregation. In 1892 they affiliated with the Congregational Christian Church from the local Congregational Society that had been formed in 1849 from the 1844 congregation. The present building was constructed in the Gothic Revival style in 1925 after the previous building had been destroyed in a fire in 1923. It was listed on the National Register of Historic Places in 1982.It is historically important as a landmark in Oregon City and, according to its NRHP nomination, "as the fullest expression of an architectural type in which the architect, Willard F. Tobey, specialized and for its outstanding array of pictorial stained glass.": 7  The stained glass windows were designed by Portland's Povey Brothers Studio. In 1961 the congregation became affiliated with Unitarian Universalism, and they changed their name to the Unitarian Universalist Congregation at Willamette Falls in 2016.

The Francis Ermatinger House is located in Oregon City, Oregon, United States. Built by Francis Ermatinger in 1843, it is the oldest house in Clackamas County. It was placed on the National Register of Historic Places in 1977, and has been operated as a museum.Built in the Greek Revival style, the house was originally located near the Willamette River, in the downtown area near Willamette Falls. Francis Ermatinger, an employee of the Hudson's Bay Company, remained in Oregon City after the company abandoned its operations there in 1845.The house has been moved twice in its history, first in 1910 to the corner of 11th and Center streets, and again in 1986 to its current location at the corner of 6th and John Adams streets, adjacent to the Stevens Crawford House museum.It possibly was in the Ermatinger House's left parlor that the famous coin toss between Francis Pettygrove and Asa Lovejoy occurred, reputedly during a dinner party held in the house in 1845. The two were arguing about whether the town they envisioned on their land claim, then called The Clearing, should be incorporated as Boston—Lovejoy's hometown in Massachusetts—or Portland—Pettygrove's hometown in Maine. Pettygrove won two out of three tosses, resulting in the city of Portland, Oregon. Multiple versions of the coin-toss location have come down. It is agreed that the event happened in an Oregon City home in 1845. But in whose home, as it never had been explicitly stated at the time? Various stories relay that the coin toss occurred in either one of the other of their houses, or in the home of A.E. Wilson, or perhaps the home of Francis Ermatinger, the very hospitable HBC Chief Trader, whose house had a fine dining room, as well as a parlor, and a new kitchen. In any event, the Ermatinger House is the only remaining house of that early period, and hence is now suited as a site to celebrate the naming of Portland in 1845.Before repairs were complete, damage from being moved twice had left the house unstable, resulting in the windows being removed. In 2011, it was closed to the public. The house was re-opened on July 7, 2018 by the City of Oregon City Parks and Recreation Department. Guided tours are available Fridays and Saturdays.

The Harvey Cross House is a historic residence in Oregon City, Oregon, United States. It was built c. 1885–1890, then relocated within Oregon City c. 1915, and is one of the finest, most stately examples of Italianate residential architecture in the city. The house was built for Harvey Cross, an investor in the Barlow Road and founder, with partners, founded the Gladstone Real Estate Association, which eventually led to the establishment of the city of Gladstone, Oregon. He served as a county judge and state senator, and promoted Chautauqua in the Willamette Valley.The house was listed on the National Register of Historic Places in 1979.

Moontrap (stylized as moontrap) is an outdoor sculpture by Lee Kelly, installed at the base of Oregon City, Oregon's Singer Creek Falls, along the McLoughlin Promenade, in the United States. The abstract stainless steel sculpture was unveiled in November 2011.

The Oregon City Municipal Elevator is a 130-foot (40 m) elevator which connects two neighborhoods in Oregon City in the U.S. state of Oregon. It is the only outdoor municipal elevator in the U.S. and one of at least 8 in the world. The upper portion contains an observation deck which accounts for its flying saucer appearance. There have been two elevators at this location. The current elevator was built in 1954–55, and it was added to the National Register of Historic Places in 2014.

The Richard B. Petzold Building, also known as the Noble Building, is an historic building in Oregon City, Oregon, United States. It was completed c. 1905, and has been listed on the National Register of Historic Places.

The Clackamas County Courthouse is an historic building in Oregon City, Oregon.

The Bank of Commerce Building is an historic building in Oregon City, Oregon, United States. In the early 2010s, the building's owners requested urban renewal grant funding in the amount of $40,000 to renovate exterior brick, masonry, and terra cotta, and add awnings and windows. The building houses the restaurants Ingrid's Scandinavian Food and Second Son Kimbap, as of late 2017.

The Oregon City Transit Center is a TriMet transit center located at McLoughlin Blvd. and 11th Street in Oregon City, Oregon. The northwest end of the center is at McLoughlin Blvd. and the southeast end is at Main Street, while Moss Street and 11th Street run through the center and are restricted to buses only.

The Oregon City Masonic Lodge, also known as Masonic Temple Multnomah No. 1, is an historic building in Oregon City, Oregon, United States. The Masonic building went on the market in 2012.

Oregon City College was a short-lived school in what is today the U.S. state of Oregon. Organized by the Baptist Church in 1849, it was located in Oregon City and is partly a predecessor to Linfield College.

The James Milne House is an historic Gothic Revival home built by carpenter James Milne, in what is now the Historic McGloughlin Neighborhood in Oregon City, Oregon, United States. It is listed on the National Register of Historic Places. Milne, an immigrant from New Brunswick, Canada, designed and built the home in 1869.