The Columbia Gorge Discovery Center presents the natural and social history of the Columbia River Gorge and Wasco County, Oregon. Topics addressed include the history of the land, settlement history and daily life in the area, the material goods carried by Meriwether Lewis and William Clark on their exploratory voyage across the country (1803-1806), and the Ice Age. The collections include more than 26,000 artifacts with particular strong showings of Native American baskets, padlocks, furniture, and farming equipment. The center is located on 50 acres of land.

The center offers exhibits, films, a children's discovery area, an interpretive trail, collections and research library access, an educator's resource center, an educational program on birds of prey, guided student tours ranging between 45 minutes and one hour in length, self-guided student tours, and traveling trunks. Reservations are required for class programs and tours. The website offers interactive activities and electronic field trips.

The Historic Fort Stueben is a reproduction fort built upon the site of the original. Dating to 1786, the original fort was built by the First American Regiment for the purpose of protecting surveyors from local Native American groups. Their safety thus bolstered, the surveyors were able to map the Northwest Territory (1789-1803), as requested by the Continental Congress. The site includes the First Federal Land Office (an original structure), officers' quarters, enlisted quarters, a quartermaster's office, artificer shop, hospital, and commissary. Topics covered include early Ohio history and the voyage of Lewis and Clarke (1803-1806).

The fort offers tours and demonstrations of surveying, blacksmithing, and flintknapping.

The Trust maintains the historic Sehner-Ellicott-von Hess House. This was the very building where Captain Meriwether Lewis trained with nationally renowned surveyor, Andrew Ellicott, on those navigational skills vital to the success of the famed Lewis and Clark Expedition and now serves as the headquarters of the Trust. Visitors are welcome to tour this finely restored example of Georgian architecture and its exhibits outlining the story of its restoration and most famous inhabitant, Andrew Ellicott.

The house offers exhibits and tours.