Union Station in San Diego, California, much more commonly known as the Santa Fe Depot, is a train station built by the Atchison, Topeka and Santa Fe Railway to replace the small Victorian-style structure erected in 1887 for the California Southern Railroad Company. The Spanish Colonial Revival style station is listed on the National Register of Historic Places. Its architecture, particularly the signature twin domes, is often echoed in the design of modern buildings in Downtown San Diego.