Case Study architect Architect Pierre Koenig’s masterfully crafted home represents the golden age of mid-century modern architecture in Southern California. A rare gem tucked away in the hills above the city, this holiday home in Los Angeles is one of those strikingly preserved houses whose visionary design remains relevant and modern over a half century later. We love the sensitive restoration and the colorful and expressive interior design that showcases and preserves the style of the era for today.