Old Saint Peter's Landmark, commonly referred to simply as Old St. Peter's, is a historic building located at the corner of 3rd and Lincoln Streets in downtown The Dalles, Oregon. It was built in 1897 and dedicated on March 17, 1898 as St. Peter's Church, and served the local Roman Catholic congregation as its place of worship until 1968. It was saved from scheduled demolition in 1971 by a group of concerned citizens who formed Old St. Peter's Landmark, Inc., for that specific purpose, and which maintains the building as a museum and site for weddings, concerts and other cultural events.