Old Pasadena Historic District

Old Pasadena, often referred to as Old Town Pasadena or simply Old Town, is the original commercial center of Pasadena, a city in California, United States, and had a latter-day revitalization after a period of decay.

Old Pasadena began as the center of a research hub where science and research institutions such as Caltech and Jet Propulsion Laboratory and companies such as Beckman Instruments and Aerojet were founded. The large concentration of such companies in the area gave it the nickname "Athens of the West".The area was also an artistic center, the home to Andy Warhol's West Coast museum debut and the first Marcel Duchamp retrospective, both at the Pasadena Art Museum. Before that, Pasadena was a center of suffragist and pacifist movements and other liberal causes.