This powerhouse firm started by Mark Rios creates a dramatic sense of place—and joy—in large-scale civic projects and private homes alike. VIP Clients: Conan O’Brien, Barry Diller, filmmaker Michael Bay, art patrons Edythe and Eli Broad, producer Brian Grazer. Up Next: Renovating the Greek Theatre in Los Angeles, ongoing work at the Hollywood Bowl, and a monograph from AMMO Books. Los Angeles; rchstudioom