Now to another icon of Southern California life, the Case Study Homes.

These are the mid-century modern homes of your dreams. Think glass boxes with clean lines and swimming pools perched over hillside cliffs. They were designed by architects like the Charles and Ray Eames and Richard Neutra.

At one time there were several dozen of them scattered around southern California, now eleven of them in the L.A. area have been added to the National Register of Historic Places under the National Park System. Cultural critic Edward Lifson joins the show to explain their significance. 

A list of the houses included in the registry:

L.A. County
Case Study House #1, 10152 Toluca Lake Ave., Los Angeles
Case Study House #9, 205 Chautauqua Blvd., Los Angeles
Case Study House #10, 711 S. San Rafael Ave., Pasadena
Case Study House #16, 1811 Bel Air Rd., Los Angeles
Case Study House #18, 199 Chautauqua Blvd., Los Angeles
Case Study House #20, 2275 N. Santa Rosa Ave., Altadena
Case Study House #21, 9038 Wonderland Park Ave., Los Angeles
Case Study House #22, 1635 Woods Dr., Los Angeles

San Diego County
Case Study House #23A, 2342 Rue de Anne, La Jolla, San Diego (determined eligible)
Case Study House #23C, 2339 Rue de Anne, La Jolla, San Diego

Ventura County
Case Study House #28, 91 Inverness Rd., Thousand Oaks