It's now owned by Randy and Kathleen Masten, who are living this year in Washington, D.C. Tom Harper, foreground, started the process to add the hyperbolic paraboloid house at 934 W. 21st St.

The Albert Frey–designed Tramway Gas Station, now the Palm Springs Visitor Information Center, features a hyperbolic paraboloid roofline, one of many terms defined in our ABCs of Midcentury Modern ...