Since the 1990s, Berlin has served as a magnet for artists drawn by cheap rents, large empty buildings, a vibrant subculture and a hip, liberal atmosphere. It ranks as the most important centre for art production in the world after New York. Olafur Eliasson, Ai Weiwei and Alicja Kwade are among the prominent artists with studios here. But for the past ten years, the city has been in the grip of a property boom, with spiralling price increases threatening its allure for artists. In 2017, Berlin had the fastest-growing real estate prices in the world, up 20.5% in a year, according to the property consultancy Knight Frank.