California Oil Museum is at 1001 E. Main St.; exit Santa Paula Frwy. (SR 126) at 10th St., then 2 blks. n. to corner of 10th and Main sts. The museum tells the story of the “black bonanza” that created wealth, work and prosperity for generations of Californians. Housed in an 1890 Queen Anne-Italianate-style building constructed by the founders of Union Oil Co., the museum presents rotating exhibits of science, technology, transportation, history and art.