National Transit Building is a historic commercial building located at 206 Seneca Street, Oil City, Venango County, Pennsylvania. The main block was built in 1890, and is a four-story, stone and brick building. An adjacent annex building was built in 1896. The annex is connected by an enclosed bridgeway at the second, third, and fourth levels. The main entrance features a sandstone archway. The National Transit Building is a jewel in the tapestry of the Oil City Downtown Commercial Historic District. Once the hub of John D. Rockefeller’s Standard Oil Company, it has been transformed by the Oil City Civic Center into artists’ studios. Architects of the building were Curtis & Archer of Fredonia, New York. The builder of the structure, Horace B. Robinson of Oil City, etched his initials into a window on the second floor of the building with his diamond ring. At a cost of $90,000.00, it was the first building in the nation with offices for companies specializing in the transportation of oil by pipeline. Located at Center and Seneca Streets, the red brick structure opened in 1890, followed six years later by the yellow brick Annex. The two structures were connected by an architectural “bridge” for a total of 25,880 square feet. The foundation of the building was constructed from cut stone taken from the Humboldt Refining Company near Plumer. The round corners of the original building were achieved by using curved bricks, with decorative bricks providing various patterns in other areas of the building. Between the main building and the Annex is the beautiful wrought iron, spiral fire escape. There was a great attention to details in the construction of The National Transit Building. The main entrance floors are marble. Wall paneling is solid oak. The banisters and newel posts are wrought iron with ornate brass and bronze appliques. American Civil War cannonballs were fashioned into doorknobs. Another impressive site is the water-powered elevator in the Annex. It is modeled after an elevator built in the Eiffel Tower in Paris. The elevator was operable until this type of elevator was banned by the state, although the intricate mechanism is still visible. In 1978 The National Transit Building was placed on the National Register of Historic Places. After several owner transitions, the building was purchased by Ralph Nader’s organization and later donated to the Oil City Civic Center. In 2005 a wrap-around lobby mural, printed