Après-art: how an Aspen ski resort became a retreat for art’s biggest names

The likes of Theaster Gates and Catherine Opie have all used Anderson Ranch to experiment. Now Tom Sachs is the latest to go tell it to the mountain

Ed Ruscha on Marcel Duchamp: ‘He was a guiding light’

When conceptual art’s godfather finally had a retrospective, it was in California – where a group of young artists welcomed him to a game of naked chess

Saving America’s most architecturally stunning homes

Created by the masters of modernism, the mid-century homes of California are too small for today’s super-rich – hence a conference about how to preserve them