XTEN Architecture Open Studio
Fountain Apartments, Los Angeles, CA
Nakahouse
La Moraleja Villa, Madrid, Spain
Mirrorhouse, Beverly Hills, California
Science Island, Kaunas, Lithuania
Guggenheim
Madisonhouse
Varna
Sapphire Gallery

XTEN Architecture is an award-winning architecture firm based in Los Angeles, California and Sissach, Switzerland. Founded in 2000 by partners Monika Häfelfinger SIA and Austin Kelly AIA, XTEN Architecture is a full service architecture and design firm specializing in custom residential, cultural, institutional and commercial buildings.