Oregon

Founded in 1889 by Thomas Lister Kay, this mill produced wool blankets and fabrics for 70 years, playing a critical role in Salem's early economy. It is open to the public as part of the Willamette Heritage Center (formerly the Mission Mill Museum).

Formerly known as the Mission Mill Museum, the Willamette Heritage Center incorporates several 19th-century buildings from Salem's early pioneer history, which centered around wool manufacturing and Methodist missions.

Built in 1930, this small covered bridge over Mosby Creek has been restored and is now open only to pedestrians.

Completed in 1866 by Robert Imbrie, this farmhouse is now part of the Cornelius Pass Roadhouse, a McMenamins property containing several pubs. Imbrie Hall is not usually open to the public but is available as an event venue.

This covered bridge with red-painted sides was built in 1925 and closed to traffic in 1987. It has been preserved alongside a newer bridge and provided with pedestrian access.

The Oregon City Bridge, also known as the Arch Bridge, spans the Willamette River between Oregon City and West Linn, Oregon. Designed by Conde McCullough, it was completed in 1922.

Designed by William C. Knighton in the Queen Anne style, the Luke A. Port House was built in 1894. Now known as Deepwood Museum and Gardens, the house is open for tours and hosts seasonal events.