The Aline Barnsdall Hollyhock House in the East Hollywood neighborhood of Los Angeles, California, was designed by Frank Lloyd Wright originally as a residence for oil heiress Aline Barnsdall. The house is now the centerpiece of the city's Barnsdall Art Park. It is noted for developing an influential architectural aesthetic, which combined indoor and outdoor living spaces. In July 2019, along with seven other buildings designed by Wright in the 20th century, it was added to the UNESCO World Heritage List. It is the first time modern American architecture has been recognized on the World Heritage List.