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Photo: National Park Service, United States, Public domain via Wikimedia Commons
John McLoughlin was the head of the British Hudson's Bay Company in the Oregon Country. His house has been preserved as a museum of the fur trade and settlement of Oregon. Free tours at 15 min past the hour.
Fort Vancouver National Historic Site is a United States National Historic Site located in the states of Washington and Oregon. The National Historic Site consists of two units, one located on the site of Fort Vancouver in modern-day Vancouver, Washington; the other being the former residence of John McLoughlin in Oregon City, Oregon. The two sites were separately given national historic designation in the 1940s. The Fort Vancouver unit was designated a National Historic Site in 1961, and was combined with the McLoughlin House into a unit in 2003.
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This historic house has been mostly restored and furnished with items from 1908 to 1920.
Only municipal elevator in the United States. Observation deck has a view of city and the Willamette River. If you want a souvenir, ask the elevator operator (yes, it has one) for a "lifetime pass".
Clackamas County Historical Society
Natural horseshoe-shaped waterfall, 2nd largest by volume in the United States after Niagara Falls. A former paper mill overlooking the falls is being redeveloped. As of 2017, the best views of the falls are from a public viewpoint below the Museum of the Oregon Territory, or by taking the Municipal Elevator to the McLoughlin Promenade.
Located at the actual end of the Oregon Trail, the museum features costumed historical interpreters.