The Caples House Museum complex occupies a whole city block in the historic locality of Columbia City Oregon. Here, in 1870, on the banks of the beautiful Columbia River and with a majestic view of Mt. St. Helens, Dr. Charles Green Caples built his two-story home from logs cut near Monticello Washington, now called Longview. The house was occupied continuously by the Caples family until 1959.

The house contains a parlor, doctor's office, kitchen and pantry, three bedrooms; all with antique furniture. Other buildings include a wash house and tool shed. The old Carriage House has been converted into what is called the Childrens' Attic. It contains an outstanding display of old dolls, toys, and childrens' items. There is a collection of miniature dolls representing the First Ladies of the United States of America, dressed in their inaugural gowns fashioned after the unique collection in the Smithsonian Institution.